CVE-2021-22175: GitLab Server-Side Request Forgery (SSRF) Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2026-02-18. EPSS: 53.4% chance of exploitation in the next 30 days.

When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is disabled

Affected products

• GitLab GitLab: from 10.5.0, before 13.6.7 (fixed in 13.6.7); from 13.7.0, before 13.7.7 (fixed in 13.7.7); from 13.8.0, before 13.8.4 (fixed in 13.8.4)

Published 2021-06-11. Last modified 2026-10-01.