CVE-2021-39935
medium · 6.8Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Added 2026-02-03Remediation due 2026-02-24
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
6.8
CVSS
35.6%
EPSS (exploit prob.)
98th
EPSS percentile
2021-12-13
Published
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-918
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| gitlab | gitlab | >= 10.5.0, < 14.3.6 |
| gitlab | gitlab | >= 10.5.0, < 14.3.6 |
| gitlab | gitlab | >= 14.4.0, < 14.4.4 |
| gitlab | gitlab | >= 14.4.0, < 14.4.4 |
| gitlab | gitlab | >= 14.5.0, < 14.5.2 |
| gitlab | gitlab | >= 14.5.0, < 14.5.2 |
Check a specific version with /api/v1/cve/match.
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39935.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/346187
- https://hackerone.com/reports/1236965
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39935.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/346187
- https://hackerone.com/reports/1236965
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-39935
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-39935