CVE-2026-8937
MEDIUM 4.3GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 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 to read private child issue contents, including titles and descriptions, from projects they had no access to, due to missing authorization checks on linked work items within visible epics.
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-862: : Missing 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 | ≥ 19.0.0 and < 19.2.7 |
| Gitlab | Gitlab | ≥ 19.0.0 and < 19.2.7 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.3 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.3 |
| Gitlab | Gitlab | 19.4.0 |
| 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/3702369 CVE record · GitLab · Updated 2026-09-29T09:35:33.015Z
NVD · CVE-2026-8937 · Updated 2026-10-05T17:05:34.863
Advisories
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ CVE record · GitLab · Updated 2026-09-29T09:35:33.015Z
NVD · CVE-2026-8937 · Updated 2026-10-05T17:05:34.863 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88689 EUVD · EUVD-2026-88689
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/600533 CVE record · GitLab · Updated 2026-09-29T09:35:33.015Z
NVD · CVE-2026-8937 · Updated 2026-10-05T17:05:34.863