CVE-2021-39935VulnerabilityPublished 02/03/2026Updated 10/24/2026
CVE-2021-39935: GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability
Affects GitLab Community and Enterprise EditionsSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 02/03/2026
- KEV deadline
- 02/24/2026
- EPSS
- 36.1% chance of exploitation in 30 days – higher than 98% of CVEs
What to do
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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.