CVE-2025-68662
Published: 28 January 2026
Summary
CVE-2025-68662 is a high-severity SSRF (CWE-918) vulnerability in Discourse Discourse. Its CVSS base score is 7.6 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 6.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
SSRF flaw in public-facing Discourse web app directly enables exploitation of remote services via network-accessible request forgery.
NVD Description
Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and…
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2026.1.0. No known workarounds are available.
Deeper analysisAI
CVE-2025-68662 affects Discourse, an open-source discussion platform, specifically due to a hostname validation issue in its FinalDestination component. This flaw, tracked under CWE-918 (Server-Side Request Forgery), exists in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, enabling the bypass of SSRF protections under certain conditions. The vulnerability carries a CVSS v3.1 base score of 7.6 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L), indicating network accessibility with low complexity and privilege requirements.
Exploitation requires low privileges, such as those of an authenticated user, and can occur over the network without user interaction. Attackers can achieve high confidentiality impact by bypassing SSRF controls, potentially accessing internal resources, alongside low impacts on integrity and availability.
Discourse has addressed the issue in patched versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds exist. Additional details are available in the GitHub security advisory at https://github.com/discourse/discourse/security/advisories/GHSA-gcfp-rjfc-925c.
Details
- CWE(s)