CVE-2026-4523
LOW 3.7GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 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 unauthenticated user to read CI/CD job trace contents containing sensitive variable values due to improper authorization enforcement in the GraphQL API.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.3%chance of exploitation in 30 days · 17th percentile
Impact if exploited
3.7CVSS 3.1 · LOW
- ConfidentialityLow
- IntegrityNone
- AvailabilityNone
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: Needs a race window or specific setup
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
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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:H/PR:N/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 | ≥ 15.11.0 and < 19.2.7 |
| Gitlab | Gitlab | ≥ 15.11.0 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
- LOW 3.7 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - LOW 3.7 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
References
Exploit-tagged references (not proof of a PoC)
- https://hackerone.com/reports/3590929 CVE record · GitLab · Updated 2026-09-29T09:35:38.023Z
NVD · CVE-2026-4523 · Updated 2026-10-05T17:07:31.000
Advisories
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ CVE record · GitLab · Updated 2026-09-29T09:35:38.023Z
NVD · CVE-2026-4523 · Updated 2026-10-05T17:07:31.000 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-88690 EUVD · EUVD-2026-88690
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/594294 CVE record · GitLab · Updated 2026-09-29T09:35:38.023Z
NVD · CVE-2026-4523 · Updated 2026-10-05T17:07:31.000