CVE-2026-10518
MEDIUM 4.3GitLab has remediated an issue in GitLab EE affecting all versions from 17.9 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user with guest-level permissions to read private security policy content they were not authorized to access due to improper authorization enforcement.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 13th percentile
Impact if exploited
4.3CVSS 3.1 · MEDIUM
- ConfidentialityLow
- IntegrityNone
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires a low-privilege account
- ✓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 daily for recent CVEs, 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-863: : Incorrect Authorization
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Gitlab | Gitlab | ≥ 17.9.0 and < 19.2.7 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.3 |
| Gitlab | Gitlab | 19.4.0 |
All CVSS metrics
- MEDIUM 4.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - MEDIUM 4.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
Exploit-tagged references (not proof of a PoC)
- https://hackerone.com/reports/3686230 CVE record · GitLab · Updated 2026-09-29T09:35:28.017Z
NVD · CVE-2026-10518 · Updated 2026-10-05T17:08:36.230
Advisories
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ CVE record · GitLab · Updated 2026-09-29T09:35:28.017Z
NVD · CVE-2026-10518 · Updated 2026-10-05T17:08:36.230 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88688 EUVD · EUVD-2026-88688
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/601723 CVE record · GitLab · Updated 2026-09-29T09:35:28.017Z
NVD · CVE-2026-10518 · Updated 2026-10-05T17:08:36.230