Server-Side Request Forgery (SSRF) in Discourse - CVE-2025-68662
Published: January 29, 2026
Vulnerability identifier: #VU122121
CSH Severity: Medium
CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-68662
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to hostname validation issue in FinalDestination. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
Discourse
How to mitigate CVE-2025-68662
Install updates from vendor's website.
Discourse - addressed in versions 3.5.4, 2025.11.2, 2025.12.1, 2026.1.0