CVE-2025-14513
HIGH 7.5 ALL-YEARSGitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.11 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an unauthenticated user to cause a denial of service condition due to improper input validation when processing specially crafted JSON payloads in the protected branches API.
Severe if exploited (CVSS 7.5), but no confirmed exploitation. Patch on a normal cadence.
Exploitation likelihood
0.5%chance of exploitation in 30 days · 42nd percentile
Impact if exploited
7.5CVSS 3.1 · HIGH · CNA
- ConfidentialityNone
- IntegrityNone
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-1284: : Improper Validation of Specified Quantity in Input
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Gitlab | Gitlab | ≥ 16.11.0 and < 18.7.6 |
| Gitlab | Gitlab | ≥ 16.11.0 and < 18.7.6 |
| Gitlab | Gitlab | ≥ 18.8.0 and < 18.8.6 |
| Gitlab | Gitlab | ≥ 18.8.0 and < 18.8.6 |
| Gitlab | Gitlab | ≥ 18.9.0 and < 18.9.2 |
| Gitlab | Gitlab | ≥ 18.9.0 and < 18.9.2 |
All CVSS metrics
- HIGH 7.5 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - HIGH 7.5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Exploit-tagged references (not proof of a PoC)
- https://hackerone.com/reports/3452477 CVE record · GitLab · Updated 2026-03-11T16:05:30.683Z
NVD · CVE-2025-14513 · Updated 2026-06-17T08:36:03.040
Advisories
- https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/ CVE record · GitLab · Updated 2026-03-11T16:05:30.683Z
NVD · CVE-2025-14513 · Updated 2026-06-17T08:36:03.040 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-208576 EUVD · EUVD-2025-208576
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/583718 CVE record · GitLab · Updated 2026-03-11T16:05:30.683Z
NVD · CVE-2025-14513 · Updated 2026-06-17T08:36:03.040
Sources: NVD · CVE.org · All sources and attribution · EPSS