CVE-2025-4225
MEDIUM 5.3 ALL-YEARSAn issue has been discovered in GitLab CE/EE affecting all versions from 14.1 before 18.1.5, 18.2 before 18.2.5, and 18.3 before 18.3.1 that that under certain conditions could have allowed an unauthenticated attacker to cause a denial-of-service condition affecting all users by sending specially crafted GraphQL requests.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.4%chance of exploitation in 30 days · 31st percentile
Impact if exploited
5.3CVSS 3.1 · MEDIUM · CNA
- ConfidentialityNone
- IntegrityNone
- AvailabilityLow
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-770: : Allocation of Resources Without Limits or Throttling
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Gitlab | Gitlab | ≥ 14.1.0 and < 18.1.5 |
| Gitlab | Gitlab | ≥ 14.1.0 and < 18.1.5 |
| Gitlab | Gitlab | ≥ 18.2.0 and < 18.2.5 |
| Gitlab | Gitlab | ≥ 18.2.0 and < 18.2.5 |
| Gitlab | Gitlab | 18.3.0 |
| Gitlab | Gitlab | 18.3.0 |
All CVSS metrics
- MEDIUM 5.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - MEDIUM 5.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - HIGH 7.5 v3.1 · NVD Primary
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/3100624 CVE record · GitLab · Updated 2025-08-27T19:33:45.928Z
NVD · CVE-2025-4225 · Updated 2026-06-17T09:32:48.210
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-25950 EUVD · EUVD-2025-25950
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/issues/538983 CVE record · GitLab · Updated 2025-08-27T19:33:45.928Z
NVD · CVE-2025-4225 · Updated 2026-06-17T09:32:48.210
Sources: NVD · CVE.org · All sources and attribution · EPSS