Improper signature verification in GitLab
Priority MEDIUM 53CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-347.
Summary
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.1 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A user could use an unverified email as a public email and commit email by sending a specifically crafted request on user update settings.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00514 44th percentileScored 2026-11-07
Fix Fixed GitLab (GitLab): 12.9.8, 12.10.7, 13.0.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| GitLab | GitLab | 10.0 to before 12.9.8; 12.10 to before 12.10.7; 13.0 to before 13.0.1 | 12.9.8, 12.10.7, 13.0.1 | Patch available | CNA |
- GitLab VendorGitLab Affected 10.0 to before 12.9.8; 12.10 to before 12.10.7; 13.0 to before 13.0.1 Fixed in 12.9.8, 12.10.7, 13.0.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* | 10.0 to before 12.9.8; 12.10 to before 12.10.7; 13.0 to before 13.0.1 | Vulnerable | GitLab |
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* Versions 10.0 to before 12.9.8; 12.10 to before 12.10.7; 13.0 to before 13.0.1 Vulnerable ·GitLab
Remediation
- Fix · CNA GitLab (GitLab) Fixed in 12.9.8, 12.10.7, 13.0.1
Timeline
- 2026-10-02 Threatist record created from CVE-2023-1204
- 2026-10-03 Alias added: GHSA-cf86-5cg9-6496
References
More Gitlab vulnerabilities
- TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
- TI-2026-58817 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab KEVCVSS 3.1CRITICAL 10.0
- TI-2023-06425 Weak Password Recovery Mechanism for Forgotten Password in GitLab KEVCVSS 3.1CRITICAL 10.0
- TI-2021-05191 Code injection in GitLab KEVCVSS 3.1CRITICAL 10.0
- TI-2021-05161 Server-side request forgery in GitLab KEVCVSS 3.1CRITICAL 9.8
- TI-2022-02763 Injection in GitLab CVSS 3.1CRITICAL 9.9
Sources
- CVE-2023-1204 · CVE Program
- CVE-2023-1204 · NVD
- FIRST EPSS
- GHSA-cf86-5cg9-6496 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences