CVE-2021-39935
CVSS v3
7.5
HIGH
EPSS Score
54.3 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.5 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. Unauthorized external users could perform Server Side Requests via the CI Lint API
CISA Known Exploited Vulnerability
- Date Added
- 2026-02-03
- Patch Due Date
- 2026-02-24
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-12-13
Frequently asked questions
What is CVE-2021-39935?
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.5 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. Unauthorized external users could perform Server Side Requests via the CI Lint API
Is CVE-2021-39935 actively exploited?
Yes. CVE-2021-39935 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-02-24.
What is the CVSS score for CVE-2021-39935?
CVE-2021-39935 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-39935 affecting your environment?
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