CVE-2026-3855
LOW 3.1GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2.7 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user with project-level permissions to access restricted file contents on the server or cause denial of service due to improper validation of parameters in the Terraform state upload functionality.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.3%chance of exploitation in 30 days · 27th percentile
Impact if exploited
3.1CVSS 3.1 · LOW
- 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: 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-99: : Improper Control of Resource Identifiers ('Resource Injection')
CVSS vector
CVSS:3.1/AV:N/AC:H/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 | ≥ 18.2.7 and < 19.1.8 |
| Gitlab | Gitlab | ≥ 18.2.7 and < 19.1.8 |
| Gitlab | Gitlab | ≥ 19.2.0 and < 19.2.6 |
| Gitlab | Gitlab | ≥ 19.2.0 and < 19.2.6 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.2 |
| Gitlab | Gitlab | ≥ 19.3.0 and < 19.3.2 |
All CVSS metrics
- LOW 3.1 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N - LOW 3.1 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N - MEDIUM 6.8 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
References
Exploit-tagged references (not proof of a PoC)
- https://hackerone.com/reports/3575167 CVE record · GitLab · Updated 2026-09-16T06:34:30.822Z
NVD · CVE-2026-3855 · Updated 2026-09-28T13:27:24.133
Advisories
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/ CVE record · GitLab · Updated 2026-09-16T06:34:30.822Z
NVD · CVE-2026-3855 · Updated 2026-09-28T13:27:24.133 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-80121 EUVD · EUVD-2026-80121
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/592821 CVE record · GitLab · Updated 2026-09-16T06:34:30.822Z
NVD · CVE-2026-3855 · Updated 2026-09-28T13:27:24.133