All vulnerabilities
CVE-2021-39935

GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability

GitLab Community and Enterprise EditionsApplications & CMS
Open in ThreatlineRecord JSON
CVSS
6.8Medium
ExploitationExploited in the wildAdded to KEV 3 Feb 2026CISA KEV
Exploit odds (EPSS)36.1%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline24 Feb 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 13 Dec 2021, 15:47 UTCPublishedCVE List
  2. 3 Feb 2026Added to CISA KEVCISA KEV

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.

Text from CVE List

Affected versions 3

  • GitLabaffected: >=10.5, <14.3.6CVE List
  • GitLabaffected: >=14.4, <14.4.4CVE List
  • GitLabaffected: >=14.5, <14.5.2CVE List

References 6