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PatchSiren cyber security CVE debrief

CVE-2026-8716 GitLab CVE debrief

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed an authenticated user to access CI data from a different ref type than intended.

Vendor
GitLab
Product
Unknown
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-27
Original CVE updated
2026-05-27
Advisory published
2026-05-27
Advisory updated
2026-05-27

Who should care

Organizations running self-managed GitLab CE/EE instances, particularly those with multi-tenant environments or strict CI data segregation requirements between different ref types (branches, tags, merge requests). DevOps teams and security administrators responsible for CI/CD pipeline security should prioritize patching to prevent potential information disclosure across repository references.

Technical summary

CVE-2026-8716 is a medium-severity vulnerability in GitLab CE/EE where an authenticated user could access Continuous Integration (CI) data from a different ref type than intended. The issue stems from incorrect resolution of references (CWE-706), potentially allowing unauthorized access to CI pipeline data across different branch or tag contexts. The vulnerability affects versions from 12.7 through multiple 18.x and 19.0 release branches. GitLab has released patches addressing this issue. No known exploitation in the wild has been reported, and the vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog.

Defensive priority

medium

Recommended defensive actions

  • Upgrade GitLab CE/EE to version 18.10.7, 18.11.4, or 19.0.1 or later
  • Review CI pipeline configurations and access controls for sensitive ref types
  • Audit CI job logs and artifacts for unauthorized access patterns
  • Verify that CI data access permissions align with intended ref type restrictions

Evidence notes

The vulnerability was disclosed by GitLab on 2026-05-27 with a CVSS 3.1 score of 4.3 (Medium). The issue affects GitLab Community Edition (CE) and Enterprise Edition (EE) across multiple version ranges. GitLab released patches in versions 18.10.7, 18.11.4, and 19.0.1. The vulnerability is classified under CWE-706 (Use of Incorrectly-Resolved Name or Reference).

Official resources

2026-05-27