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Server-Side Request Forgery (SSRF) Resources

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A curated AppSec resource library covering XSS, SQLi, SSRF, IDOR, RCE, XXE, OSINT, and more.

Server-Side Request Forgery (SSRF)

In a Server-Side Request Forgery (SSRF) attack, the attacker abuses functionality on the server to read or update internal resources. By supplying or modifying a URL that the server-side code processes, the attacker can reach internal services, read cloud metadata, and access systems that are not exposed to the internet.

SSRF has become one of the highest-impact vulnerability classes in modern cloud environments. Accessing the cloud metadata endpoint (http://169.254.169.254) from an SSRF can yield temporary IAM credentials, leading to full cloud account compromise. Even in non-cloud environments, SSRF enables port scanning of internal networks, accessing internal admin panels, and reaching databases or caches that trust requests from localhost.

Attackers use a wide range of bypass techniques to defeat SSRF filters: DNS rebinding, IP address encoding variations (decimal, octal, hex), URL parser inconsistencies, IPv6 representations, and redirect chains. Partial SSRF — where the attacker controls only part of the URL — can still be exploitable through open redirects or URL fragment abuse.

SSRF commonly appears in webhook integrations, URL preview features, PDF generators, image processors, and any functionality that fetches remote resources on behalf of the user.

This page collects SSRF research, bypass techniques, cloud exploitation methods, and real-world writeups from bug bounty programs and security research.

From OWASP

Read the SSRF guideA long-form, source-cited deep dive synthesized from every resource below. The comprehensive SSRF guide on chs.usA hand-written, in-depth practitioner guide — attacks, testing, and prevention.
Date Added Link Excerpt
2026-07-10 NEW 2026Sudarshana: Cornered a headless PDF export that fetched user URLs. Pointed it at 169.254.169.254/latest/meta-data/iam/security-credentials/ and it echoed a role's temp keys. IMDSv2 blocks this: no PUT token no answer. Allowlist the hosts you call denylists miss the IP. #SSRF #IMDSv2 intermediateA security researcher, Sudarshana, discovered a Server-Side Request Forgery (SSRF) vulnerability in a headless PDF export. By directing the export to a specific AWS IMDSv2 endpoint (169.254.169.254/latest/meta-data/iam/security-credentials/), they successfully retrieved temporary AWS credentials. The researcher notes that IMDSv2's default configuration, which requires a PUT token, prevents this exploitation. They recommend using host allowlists rather than denylists to mitigate such vulnerabilities, as denylists may miss specific IPs.
2026-07-10 NEW 2026Daily CyberSecurity: Four Apache Camel vulnerabilities allow header injection server-side request forgery secret disclosure and an authentication bypass. Patch to 4.21.0 now. #ApacheCamel #HeaderInjection #SSRF #CyberSecurity #Vulnerability #InfoSec newsFour critical vulnerabilities have been discovered in Apache Camel, affecting versions prior to 4.21.0. These vulnerabilities enable header injection, server-side request forgery (SSRF), secret disclosure, and authentication bypass. Users are strongly advised to update to version 4.21.0 immediately to patch these security flaws and protect their systems.
2026-07-10 NEW 2026Roundcube Webmail 1.7.2 Fixes Zero-Click XSS SSRF Bypass and DoS Flaws newsRoundcube Webmail 1.7.2 addresses critical security vulnerabilities, including a zero-click Cross-Site Scripting (XSS) flaw, a Server-Side Request Forgery (SSRF) bypass, and Denial of Service (DoS) issues. The update provides essential patches to protect users from these threats. → cyberpress.org
2026-07-09 NEW 2026Dev: SSRF: Your ticket to internal networks & cloud metadata! Misconfigs in web apps let you fetch backend resources. Check URL params API endpoints. Ffuf & Burp are your friends. Master it! #SSRF #BugBounty beginnerThis content explains Server-Side Request Forgery (SSRF) vulnerabilities. SSRF attacks exploit web application misconfigurations to allow attackers to access internal networks and cloud metadata by fetching backend resources. Key areas to investigate for SSRF include URL parameters and API endpoints. Tools like Ffuf and Burp Suite are recommended for identifying these vulnerabilities. The post encourages mastering SSRF for bug bounty hunting. No specific payout amount is mentioned.
2026-07-09 NEW 2026Daily CyberSecurity: Five Apache Camel vulnerabilities enable server-side request forgery and a Keycloak authentication bypass. Upgrade to 4.21.0 4.18.3 or 4.14.8. #ApacheCamel #SSRF #AuthBypass #Deserialization #Keycloak #InfoSec newsFive vulnerabilities in Apache Camel have been disclosed, enabling server-side request forgery (SSRF) and an authentication bypass in Keycloak. Users are strongly advised to upgrade their Apache Camel installations to versions 4.21.0, 4.18.3, or 4.14.8 to mitigate these security risks. The vulnerabilities also involve deserialization flaws.
2026-07-08 NEW 2026Hugo | DevOps | Cybersecurity : #CVE-2026-57573 - #SSRF in #Crawl4AI #Docker #API. Streaming paths skip destination validation. Unauthenticated remote access to internal networks. #CVSS 8.6. No patch available. Mitigate immediately. #CVE #infosec #k8s #devops #devsecops #sysadmin #kubernetes newsCVE-2026-57573 is a critical Server-Side Request Forgery (SSRF) vulnerability in the Crawl4AI Docker API. It allows unauthenticated remote attackers to access internal networks due to streaming paths skipping destination validation. With a CVSS score of 8.6, this vulnerability is severe. No patch is currently available, making immediate mitigation crucial for DevOps, cybersecurity, and system administration professionals.
2026-07-08 NEW 2026Graven - Herald.codes: Hello tout le monde ! Nouvelle video Nouveau format #ssrf #owasp #python newsThis content announces a new video from Graven - Herald.codes in a new format, focusing on Server-Side Request Forgery (SSRF), OWASP, and Python. The post includes a link to the video. No bug bounty payout amounts are mentioned.
2026-07-08 NEW 2026Daily CyberSecurity: New pretix vulnerabilities include a critical session takeover chain (CVE-2026-13602) and an SSRF API key leak. Update to 2026.5.3 now. #pretix #SessionTakeover #SSRF #CyberSecurity #CVE202613602 #CVE202613603 newsPretix has released version 2026.5.3 to address two critical vulnerabilities. CVE-2026-13602 is a session takeover chain, and another vulnerability allows for an SSRF API key leak. Users are urged to update immediately to mitigate these security risks.
2026-07-08 NEW 2026The HTTP 303 SSRF Hack : From Python HTTP Client Defaults to AWS Credential Exfiltration. intermediate 13 min read SecretsWriteup detailing an HTTP 303 SSRF vulnerability that escalates to AWS credential exfiltration. This exploit chains a user-controlled `token_uri` field in BigQuery service account credentials, an HTTP client with default redirect handling, and the AWS Instance Metadata Service (IMDS). By configuring a server to respond with an HTTP 303 redirect, a POST request to IMDS is implicitly converted to a GET request, allowing the attacker to retrieve temporary IAM credentials for the Kubernetes worker node. → infosecwriteups.com
2026-07-07 NEW 2026InfoSec Community: New Writeup Alert! "The HTTP 303 SSRF Hack : From Python HTTP Client Defaults to AWS Credential Exfiltration." by Alvin Ferdiansyah is now live on IW! Check it out here: #oauth #python #ssrf #bugbountywriteup intermediateAlvin Ferdiansyah's new writeup, "The HTTP 303 SSRF Hack: From Python HTTP Client Defaults to AWS Credential Exfiltration," is now available. The analysis explores how default Python HTTP client behaviors can lead to SSRF vulnerabilities, ultimately enabling AWS credential exfiltration. This bug bounty writeup is a valuable resource for those interested in OAuth, Python security, and SSRF exploit techniques.
2026-07-06 NEW 2026Daily CyberSecurity: Four Fluentd vulnerabilities are fixed in v1.19.3 including a 9.8 RCE (CVE-2026-44024) and SSRF (CVE-2026-44161). Patch now. #Fluentd #RCE #SSRF #CVE #Cybersecurity #Infosec newsDaily CyberSecurity: Four Fluentd vulnerabilities are fixed in v1.19.3, including a 9.8 RCE (CVE-2026-44024) and SSRF (CVE-2026-44161). Patch now. #Fluentd #RCE #SSRF #CVE #Cybersecurity #Infosec http...
2026-07-06 NEW 2026Daily CyberSecurity: HawkTrace publicly disclosed Microsoft Exchange vulnerability CVE-2026-45504 with PoC exploit code. The SSRF flaw reads arbitrary files. Patch now. #MicrosoftExchange #CVE202645504 #SSRF #Cybersecurity #PoC #Infosec newsDaily CyberSecurity: HawkTrace publicly disclosed Microsoft Exchange vulnerability CVE-2026-45504 with PoC exploit code. The SSRF flaw reads arbitrary files. Patch now. #MicrosoftExchange #CVE20264550...
2026-07-06 NEW 2026Daily CyberSecurity: HawkTrace publicly disclosed Microsoft Exchange vulnerability CVE-2026-45504 with PoC exploit code. The SSRF flaw reads arbitrary files. Patch now. #MicrosoftExchange #CVE202645504 #SSRF #Cybersecurity #PoC #Infosec newsDaily CyberSecurity: HawkTrace publicly disclosed Microsoft Exchange vulnerability CVE-2026-45504 with PoC exploit code. The SSRF flaw reads arbitrary files. Patch now. #MicrosoftExchange #CVE20264550...
2026-07-05 NEW 2026Tasfiul Hedayet: Alhamdulillah I have reported my 1st SSRF findings on @Hacker0x01 today 05.07.26 Thanks @ruh4nX bro Every valid finding boost your level and confidence. If bug exists then doesn't matter if it's out of scope. Report it mistakenly tested scope :3 #SSRF #Hacking beginnerTasfiul Hedayet has successfully reported their first Server-Side Request Forgery (SSRF) vulnerability on HackerOne. They encourage reporting bugs regardless of scope, as valid findings boost confidence and skill. This achievement was shared with thanks to @ruh4nX. The report was made on July 5, 2026.
2026-07-05 NEW 2026Hugo | DevOps | Cybersecurity : #CVE-2026-22874 - Critical #SSRF in #Gitea =1.26.2. Incomplete webhook/migration filtering. #CVSS 9.6. Upgrade immediately. #CVEAlert #DevSecOps #DevOps #sysadmin #infosec More free detailed info: newsA critical Server-Side Request Forgery (SSRF) vulnerability, CVE-2026-22874, has been discovered in Gitea version 1.26.2. The issue stems from incomplete filtering of webhooks and migrations, resulting in a high CVSS score of 9.6. Users are strongly advised to upgrade immediately to mitigate this security risk. This alert is part of ongoing cybersecurity and DevOps awareness efforts.
2026-07-05 NEW 2026CYBER MIND SPACE: Your firewall is useless... If your own server becomes the attacker. That's SSRF. #CyberSecurity #SSRF #AppSec beginnerServer-Side Request Forgery (SSRF) is a critical cybersecurity vulnerability where an attacker exploits an application to make the server send requests to an unintended location. This bypasses firewalls, as the malicious request originates from within the trusted network. Attackers can use SSRF to access internal systems, cloud metadata, or even trigger actions on other servers. The content highlights that even with robust firewalls, an SSRF vulnerability can render them ineffective if the server itself becomes the attacker's tool.
2026-07-04 NEW 2026ZOWEH: THE ATTACK CHAIN: 1. Whitelist blocks direct internal IPs 2. Found open redirect: /product/nextProduct?path=... 3. Redirect to: 4. Stock checker follows redirect 5. Admin panel accessed successfully! #SSRF #InfoSec intermediateZOWEH researchers uncovered an attack chain bypassing an internal IP whitelist. They exploited an open redirect vulnerability in the `/product/nextProduct?path=` parameter. This redirect was then followed by a stock checker, allowing them to access the admin panel successfully. The techniques used highlight the risks of open redirect vulnerabilities when coupled with internal services.
2026-07-04 NEW 2026ZOWEH: SSRF LAB 5 SOLVED: SSRF with filter bypass via open redirection Goal: Bypass whitelist to access internal admin panel Method: Chain SSRF with open redirect vulnerability #SSRF #BugBounty intermediateThis write-up details the solution to ZOWEH's SSRF Lab 5, which involves bypassing a whitelist to access an internal admin panel. The method used is chaining a Server-Side Request Forgery (SSRF) vulnerability with an open redirection flaw. This technique successfully circumvented the whitelist's restrictions. The post is tagged with #SSRF and #BugBounty, indicating its relevance to security research and bug bounty hunting.
2026-07-04 NEW 2026ZOWEH: BLACKLIST vs WHITELIST - MASTERED: | Filter | Bypass Method | |--------|---------------| | Blacklist | Encoding IP variations | | Whitelist | URL parsing tricks fragments | Lesson: Whitelists can be bypassed with careful URL manipulation #SSRF #CyberSecurity intermediateThis content explains two security filtering methods: blacklisting and whitelisting. Blacklists block known malicious inputs, which can be bypassed using encoding or IP variations. Whitelists, on the other hand, only allow specific inputs. However, even whitelists can be vulnerable to bypass techniques, particularly through clever URL parsing tricks and fragments. The key takeaway is that whitelists are not foolproof and can be circumvented with careful manipulation, highlighting a vulnerability in Server-Side Request Forgery (SSRF) attacks.
2026-07-04 NEW 2026ZOWEH: HOW IT WORKS: 1. Server validates against whitelist 2. # (fragment) is ignored in validation 3. But # tells server to go to localhost 4. Admin panel accessed successfully #SSRF #WebSecurity intermediateThis post details a Server-Side Request Forgery (SSRF) vulnerability in ZOWEH. The server validates requests against a whitelist, but it incorrectly ignores the fragment identifier (#). This allows an attacker to craft a malicious URL that bypasses the whitelist by using the # to point the server to localhost. As a result, the attacker successfully accessed the admin panel.
2026-07-04 NEW 2026ZOWEH: THE BYPASS: Whitelist checks: Used: http://localhost%2523@stock.weliketoshop.net/admin Double encoding (# %2523) tricks the parser #SSRF #InfoSec intermediateA security researcher, ZOWEH, discovered a bypass of whitelist checks through a Server-Side Request Forgery (SSRF) vulnerability. The exploit involves double encoding the '#' character as '%2523'. This technique tricks the parser, allowing access to a restricted `admin` endpoint at `stock.weliketoshop.net` via a `localhost` URL. The researcher shared this finding on Twitter. No bug bounty payout amount was mentioned.
2026-07-04 NEW 2026ZOWEH: SSRF LAB 4 SOLVED: SSRF with whitelist-based input filter (EXPERT) Goal: Bypass whitelist to access localhost/admin Filter: Only allows Bypass: Double URL-encoded fragment (#) #SSRF #BugBounty intermediateZOWEH's SSRF LAB 4, an expert-level challenge, required bypassing a whitelist-based input filter to access localhost/admin. The filter restricted input, but a double URL-encoded fragment (#) was found to be an effective bypass. This technique enabled successful exploitation of the Server-Side Request Forgery vulnerability.
2026-07-04 NEW 2026ZOWEH: BLACKLIST vs WHITELIST (Key Lesson): BLACKLIST = Block known bad inputs Bypassable with encoding variations WHITELIST = Allow only known good inputs More secure harder to bypass SSRF testing: Always try multiple encoding techniques! #SSRF #CyberSecurity beginnerThe key lesson from ZOWEH is the difference between blacklisting and whitelisting for security. Blacklisting, which blocks known bad inputs, is vulnerable to bypasses through encoding variations. Whitelisting, conversely, allows only known good inputs, making it a more secure approach that is harder to circumvent. For Server-Side Request Forgery (SSRF) testing, it's recommended to always employ multiple encoding techniques.
2026-07-04 NEW 2026ZOWEH: THE BYPASS: Blacklist blocked: localhost 127.0.0.1 admin Bypass used: Decimal IP: 127.1 URL encoding: %61dmin Result: #SSRF #InfoSec intermediateA security researcher, ZOWEH, discovered a bypass method that circumvents a blacklist intended to block access to "localhost," "127.0.0.1," and "admin." The bypass utilizes a decimal IP address representation of "127.1" and URL encoding for "admin" as "%61dmin." This technique allows for Server-Side Request Forgery (SSRF) vulnerabilities, as indicated by the researcher's result. The information was shared on social media. No bounty payout amount was mentioned.
2026-07-04 NEW 2026ZOWEH: SSRF LAB 3 SOLVED: SSRF with blacklist-based input filter Goal: Bypass blacklist to access http://localhost/admin Challenge: Blocks "localhost" "127.0.0.1" and "admin" Solution: Alternative IP formats URL encoding #SSRF #BugBounty intermediateThis SSRF challenge involved bypassing a blacklist filter to access `http://localhost/admin`. The filter blocked direct mentions of "localhost", "127.0.0.1", and "admin". The solution was to utilize alternative IP address formats and URL encoding to circumvent the restrictions and successfully access the target resource.
2026-07-04 NEW 2026Microsoft Exchange SSRF Vulnerability Lets Low-Privileged Attackers Read Arbitrary Files intermediateA Server-Side Request Forgery (SSRF) vulnerability in Microsoft Exchange allows low-privileged attackers to read arbitrary files on affected servers. This means an attacker with minimal access can exploit the flaw to access sensitive information they shouldn't be able to. The specific details and impact are outlined in the provided link. → gbhackers.com
2026-07-03 2026The Daily Tech Feed: A critical SSRF vulnerability CVE-2026-45504 in Microsoft Exchange allows authenticated users to read arbitrary files on servers. Enterprises must update their systems promptly to mitigate this risk. #MicrosoftExchange #SSRF #CVE202645504 #CyberSecurity #Vulnerability newsA critical Server-Side Request Forgery (SSRF) vulnerability, CVE-2026-45504, has been identified in Microsoft Exchange. This flaw enables authenticated users to access and read any file on affected servers. Microsoft Exchange users are urged to update their systems immediately to prevent exploitation of this serious security risk.
2026-07-03 2026ZOWEH: SSRF LAB 2 SOLVED: Basic SSRF against another back-end system Goal: Find internal admin server IP via SSRF Method: Automated IP scanning with Burp Intruder #SSRF #BugBounty intermediateZOWEH: SSRF LAB 2 SOLVED: Basic SSRF against another back-end system Goal: Find internal admin server IP via SSRF Method: Automated IP scanning with Burp Intruder #SSRF #BugBounty https://ift.tt/zm3UX...
2026-07-03 2026ZOWEH: RESULT: Discovered internal admin server IP Accessed http://[IP]/admin Deleted carlos LAB SOLVED #SSRF #InfoSec intermediateA security researcher identified an internal administrator server's IP address via an SSRF vulnerability. They successfully accessed the admin panel at `http://[IP]/admin` and deleted a user named "carlos." This successfully solved the lab challenge, demonstrating expertise in SSRF and InfoSec.
2026-07-03 2026Microsoft Exchange SSRF Vulnerability Details Released Along With Public PoC Exploit newsMicrosoft Exchange SSRF Vulnerability Details Released Along With Public PoC Exploit https://ift.tt/ejcrE5h → cybersecuritynews.com
2026-07-03 2026ZOWEH: KEY TAKEAWAY: SSRF = Server making requests it shouldn't Always test: http://localhost/ (AWS metadata) Next: SSRF against other back-end systems #SSRF #CyberSecurity beginnerThis content highlights Server-Side Request Forgery (SSRF) as a vulnerability where a server makes unintended requests. Key testing targets include `http://localhost/` and AWS metadata. The recommendation is to then explore SSRF vulnerabilities against other back-end systems. This is presented as a crucial point for cybersecurity. No specific bug bounty payout amount is mentioned.
2026-07-03 2026ZOWEH: THE ATTACK: 1. Intercept stock check request 2. Change stockApi= stockApi= http://localhost/admin 3. Server fetches admin panel from itself 4. Admin panel revealed! #SSRF #InfoSec intermediateThis describes a Server-Side Request Forgery (SSRF) vulnerability discovered by ZOWEH. The attack involves intercepting a stock check request and manipulating the `stockApi` parameter to point to `http://localhost/admin`. This causes the server to fetch its own admin panel, revealing it. The post highlights the technique using hashtags #SSRF and #InfoSec.
2026-07-03 2026ZOWEH: SSRF LAB 1 SOLVED: Basic SSRF against the local server Goal: Access admin panel by exploiting server-side request forgery Method: Modify stockApi parameter to access localhost stockApi= http://localhost/admin] #SSRF #BugBounty intermediateZOWEH successfully solved SSRF Lab 1 by exploiting a basic server-side request forgery vulnerability to access an admin panel. The method involved modifying the `stockApi` parameter to target `http://localhost/admin`. This demonstrates a common bug bounty technique for gaining unauthorized access to sensitive areas by manipulating how a server handles requests. The exploit highlights the risks associated with improperly validated user input in API parameters.
2026-07-03 2026PoC Released for Microsoft Exchange SSRF Flaw That Lets Low-Privileged Users Read Files newsA Proof of Concept (PoC) has been released for a Server-Side Request Forgery (SSRF) vulnerability in Microsoft Exchange. This flaw allows low-privileged users to read arbitrary files from the Exchange server. The PoC demonstrates how the vulnerability can be exploited, posing a significant security risk. Further details are available via the provided link. → cyberpress.org
2026-07-03 2026Daily CyberSecurity: HawkTrace publicly disclosed Microsoft Exchange vulnerability CVE-2026-45504 with PoC exploit code. The SSRF flaw reads arbitrary files. Patch now. #MicrosoftExchange #CVE202645504 #SSRF #Cybersecurity #PoC #Infosec newsHawkTrace has publicly disclosed Microsoft Exchange vulnerability CVE-2026-45504. This Server-Side Request Forgery (SSRF) flaw allows attackers to read arbitrary files from affected systems. Proof-of-Concept (PoC) exploit code is available. Users are strongly advised to patch their Microsoft Exchange installations immediately to mitigate this security risk.
2026-07-02 2026Sudarshana: CUCM CVE-2026-20230: WebDialer trusts an unauth HTTP request. Pull the hostname from Version.jws?wsdl SSRF into installClusterStatusExecute traverse dirs to drop a rogue Axis descriptor. It deploys a JSP file-writer. Stage-two shell lands as root. #CUCM #SSRF advancedThe CVE-2026-20230 vulnerability in Cisco Unified Communications Manager (CUCM) allows an attacker to exploit the WebDialer. The vulnerability involves trusting unauthenticated HTTP requests, enabling SSRF by pulling hostnames from Version.jws?wsdl. This allows directory traversal to drop a rogue Axis descriptor, leading to the deployment of a JSP file-writer. The exploit culminates in a second-stage shell landing with root privileges.
2026-07-02 2026Cisco Confirms Active Exploits of Unified CM Flaw newsCisco has confirmed active exploitation of a critical vulnerability in its Unified Communications Manager (Unified CM) software. The flaw, identified as CVE-2023-20204, allows unauthenticated attackers to execute arbitrary code on vulnerable systems. Cisco has released patches and recommends immediate application. While the potential impact is severe, no specific bug bounty payout amount was mentioned in the provided content. → sqmagazine.co.uk
2026-07-02 2026CitrixBleed To Infinity And Beyond (Citrix NetScaler Pre-Auth Memory Overread CVE-2026-8451) - watchTowr Labs advanced 18 min readAnalysis of CVE-2026-8451, dubbed "CitrixBleed To Infinity And Beyond," details a pre-authentication memory overread vulnerability in Citrix NetScaler ADC and NetScaler Gateway. This flaw, which requires the appliance to be configured as a SAML IdP, stems from insufficient input validation during XML attribute parsing. The vulnerability class, previously seen in instances like CVE-2025-5777 and CVE-2026-3055, highlights ongoing memory management concerns within Citrix NetScaler appliances. → labs.watchtowr.com
2026-07-01 2026Fluentd Security Flaws Enable Remote Code Execution SSRF DoS and Credential Exposure newsFluentd Security Flaws Enable Remote Code Execution, SSRF, DoS, and Credential Exposure https://ift.tt/mztUZw7 → gbhackers.com
2026-07-01 2026Fluentd Patches Critical RCE SSRF DoS and Sensitive Data Exposure Flaws newsFluentd has released patches for critical vulnerabilities, including Remote Code Execution (RCE), Server-Side Request Forgery (SSRF), Denial of Service (DoS), and Sensitive Data Exposure. These flaws could allow attackers to compromise systems. Users are strongly advised to update their Fluentd installations to the latest versions to mitigate these security risks. No specific bug bounty payout amount was mentioned in the provided content. → cyberpress.org
2026-07-01 2026Daily CyberSecurity: Four Fluentd vulnerabilities are fixed in v1.19.3 including a 9.8 RCE (CVE-2026-44024) and SSRF (CVE-2026-44161). Patch now. #Fluentd #RCE #SSRF #CVE #Cybersecurity #Infosec newsFluentd version 1.19.3 addresses four critical vulnerabilities, including a high-severity 9.8 RCE (CVE-2026-44024) and an SSRF vulnerability (CVE-2026-44161). Users are strongly advised to patch their Fluentd installations immediately to mitigate these security risks.
2026-07-01 2026Cisco Unified CM flaw actively exploited to drop webshells (CVE-2026-20230) news 2 min readWriteup of CVE-2026-20230, an SSRF vulnerability in Cisco Unified Communications Manager, detailing its active exploitation to drop webshells and achieve remote code execution. The exploit chain abuses the WebDialer to deploy a rogue Apache Axis service, enabling file writing to the underlying OS, as observed via honeypots and reported by Defused. A public PoC is available, and CISA has added it to their Known Exploited Vulnerabilities catalog. Mitigation involves disabling the WebDialer service. → helpnetsecurity.com
2026-06-30 2026Cisco Unified CM Flaw CVE-2026-20230 Actively Exploited in the Wild news 2 min readWriteup on CVE-2026-20230, a critical SSRF vulnerability in Cisco Unified Communications Manager that allows unauthenticated remote attackers to write files for potential root privilege escalation. While Cisco initially reported no exploitation, Defused Cyber researchers confirmed active exploitation in the wild. Mitigation involves disabling the WebDialer service, which is off by default. → securityaffairs.com
2026-06-30 2026xHackInSeconds: URL field accepted internal addresses. 169.254.169.254. IAM role credentials in the response. Full S3 and RDS access. #infosec #cloud #ssrf intermediatexHackInSeconds: URL field accepted internal addresses. 169.254.169.254. IAM role credentials in the response. Full S3 and RDS access. #infosec #cloud #ssrf https://ift.tt/AciJaEu
2026-06-29 2026Rapid7 Analysis: CVE-2021-21975 news 5 min readAnalysis of CVE-2021-21975 details an unauthenticated server-side request forgery (SSRF) vulnerability in VMware vRealize Operations Manager. This SSRF, when chained with CVE-2021-21983, enables unauthenticated remote code execution. The analysis highlights the vulnerable `/nodes/thumbprints` endpoint and demonstrates how crafted POST requests with specific JSON payloads can be used to exploit the SSRF. Affected versions include 7.0.0 through 8.3.0 of vRealize Operations Manager. → rapid7.com
2026-06-29 2026Active Exploitation Alert: Cisco CUCM CVE-2026-20230 SSRF-RCE Flaw Weaponized Within 24 Hours of Disclosure news 4 min readWriteup detailing the rapid weaponization and exploitation of Cisco CUCM CVE-2026-20230, a critical SSRF-RCE vulnerability. The analysis covers threat actor tactics including automated Tor-obfuscated campaigns and multi-stage webshell deployment via the WebDialer service and Apache Axis abuse. It outlines the exploitation chain, ranging from reconnaissance to persistent remote access, and provides mitigation strategies such as applying Cisco patches and disabling unnecessary services. → rescana.com
2026-06-28 2026MiGuεl CaRvAjAl : #Cisco Unified #CM #SSRF #Flaw Is Being #Exploited to #Drop #Webshells newsSecurity researcher MiGuεl CaRvAjAl has reported that a Server-Side Request Forgery (SSRF) vulnerability in Cisco Unified Communication Manager (CM) is actively being exploited. Attackers are using this flaw to drop webshells, which are malicious scripts that allow unauthorized access and control over a server. This exploitation poses a significant security risk, enabling potential data breaches and further system compromise. The report highlights the urgent need for patching and mitigation strategies for affected Cisco Unified CM deployments.
2026-06-27 2026Hugo | DevOps | Cybersecurity : #CVE-2026-56663 - #SSRF bypass in @Auto_GPT allows authenticated users to access internal networks. #CVSS 8.5. No patch available. Block special-use IPs and restrict access immediately. #CVEAlert #syadmin #devsecops #devops #developers #CVE #infosec More info: newsCVE-2026-56663 is a critical SSRF bypass vulnerability in Auto_GPT, rated CVSS 8.5. It enables authenticated users to access internal networks. Currently, no patch is available. System administrators and developers are advised to immediately block special-use IP addresses and restrict access to mitigate the risk.
2026-06-26 2026Hugo | DevOps | Cybersecurity : #CVE-2026-12975 - #SSRF in #Apicurio Registry. No auth needed by default. Malicious #XML triggers blind SSRF or #DoS via entity expansion. #CVSS 8.5. Patch unknown - restrict access now. #CVEAlert #infosec #CyberSecurity #cybersecuritytips More detailed info: newsHugo | DevOps | Cybersecurity 🇱🇻: #CVE-2026-12975 - #SSRF in #Apicurio Registry. No auth needed by default. Malicious #XML triggers blind SSRF or #DoS via entity expansion. #CVSS 8.5. Patch unknown - ...
2026-06-26 2026CISA Warns of Cisco Unified CM Vulnerability Exploited in Attacks newsCISA Warns of Cisco Unified CM Vulnerability Exploited in Attacks https://ift.tt/eLZ4fsr → cybersecuritynews.com

Frequently Asked Questions

What is SSRF and why is it critical?
Server-Side Request Forgery (SSRF) tricks the server into making HTTP requests to unintended destinations. It is critical because it can access internal services, cloud metadata endpoints (169.254.169.254), and private networks that are not reachable from the internet, potentially leading to full cloud account compromise.
What are common SSRF bypass techniques?
Common bypasses include DNS rebinding, IP encoding tricks (decimal, octal, hex, IPv6), URL parser inconsistencies between the filter and the HTTP library, open redirect chains, and alternative URL schemes. Attackers also use shortened URLs and domain names that resolve to internal IPs.
Where does SSRF commonly appear?
SSRF is frequently found in webhook integrations, URL preview and unfurling features, PDF and screenshot generators, image/file processing pipelines, and any functionality where the application fetches a remote resource based on user-supplied URLs.

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