CVE-2026-78335
MEDIUM 4.2GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user holding a project-scoped fine-grained Personal Access Token to modify integrations belonging to a group outside the token's scope, due to incorrect authorization checks.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 9th percentile
Impact if exploited
4.2CVSS 3.1 · MEDIUM
- ConfidentialityLow
- IntegrityLow
- 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: 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
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:H/PR:L/UI:N/S:U/C:L/I:L/A:N
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Gitlab | Gitlab | ≥ 19.1.0 and < 19.2.8 |
| Gitlab | Gitlab | ≥ 19.1.0 and < 19.2.8 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.5 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.5 |
| Gitlab | Gitlab | ≥ 19.4.0 and < 19.4.2 |
| Gitlab | Gitlab | ≥ 19.4.0 and < 19.4.2 |
All CVSS metrics
- MEDIUM 4.2 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - MEDIUM 4.2 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
References
Exploit-tagged references (not proof of a PoC)
- https://hackerone.com/reports/3893467 CVE record · GitLab · Updated 2026-10-13T01:08:01.174Z
NVD · CVE-2026-78335 · Updated 2026-10-16T19:17:43.643
Advisories
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/ CVE record · GitLab · Updated 2026-10-13T01:08:01.174Z
NVD · CVE-2026-78335 · Updated 2026-10-16T19:17:43.643 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98221 EUVD · EUVD-2026-98221
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/621535 CVE record · GitLab · Updated 2026-10-13T01:08:01.174Z
NVD · CVE-2026-78335 · Updated 2026-10-16T19:17:43.643