Hostname Validation Issue in Discourse Discussion Platform
CVE-2025-68662

7.6HIGH

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
28 January 2026

What is CVE-2025-68662?

A hostname validation issue has been identified in the Discourse discussion platform, affecting versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. This vulnerability allows an attacker to potentially bypass Server-Side Request Forgery (SSRF) protections under specific conditions. Users and administrators are urged to upgrade to the patched versions as no workarounds are available to mitigate this issue.

Affected Version(s)

discourse < 3.5.4 < 3.5.4

discourse >= 2025.11.0-latest, < 2025.11.2 < 2025.11.0-latest, 2025.11.2

discourse >= 2025.12.0-latest, < 2025.12.1 < 2025.12.0-latest, 2025.12.1

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.