CVE-2021-39935
Server-Side Request Forgery (SSRF) in GitLab Community and Enterprise Editions. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 3 February 2026.
- Product
- GitLab Community and Enterprise Editions
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
GitLab Community and Enterprise Editions contain a server-side request forgery vulnerability which could allow unauthorized external users to perform Server Side Requests via the CI Lint API.
More from GitLab this year.
- CVE-2026-97229 Integer Overflow or Wraparound, added
- CVE-2026-85706 Path Traversal, added
- CVE-2021-22175 Server-Side Request Forgery (SSRF), added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.