CVE-2021-39935
GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability
- Medium 6.8
- Exploited: added to CISA KEV 3 Feb 2026
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
Key facts
- Published
- 13 Dec 2021
- Last changed
- 3 Feb 2026
- Assigned by
- GitLab
- KEV added
- 3 Feb 2026
- KEV fix due
- 24 Feb 2026
- EPSS
- 36.14% likely to be exploited in the next 30 days, higher than 98.502% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: partial
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 6.8CVSS 3.1, Mediumfrom the CNA (GitLab)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
What to do
- Apply 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 required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| GitLab | GitLab |
|
Timeline
- 13 Dec 2021 Published
- 3 Feb 2026 CVE-2021-39935 added to CISA KEV
- 3 Feb 2026 Added to the CISA KEV catalogue