Actively exploited · Published Sep 12, 2026 · Assigned by GitLab
CVE-2026-85706Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab
Critical 10.0 Exploited
In plain English
A critical-severity path traversal in GitLab from GitLab. Attackers are actively exploiting it in the wild (listed by CISA on September 11, 2026). The chance it is exploited in the next 30 days is estimated at 97.4% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA guidance
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Federal agencies must remediate by Sep 14, 2026.
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.11.12, 19.0 before 19.0.9, 19.1 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an unauthenticated user could have read arbitrary files from the GitLab server due to improper path confinement and missing authentication enforcement in the repository commits API.
Affected products (as reported)
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/627748
- HackerOne Bug Bounty Report #3909881 technical-description, exploit, permissions-required
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85706 government-resource