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Findings

CVE-2026-5816

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated use…

Published Apr 22, 2026 · updated Jun 17, 2026 · gitlab gitlab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 22, 2026 · GitLab Security Releases

    Detected

    On April 22, 2026, we released versions 18.11.1, 18.10.4, 18.9.6 for GitLab Community Edition (CE) and Enterprise Edition (EE). These versions contain important bug and security fixes, and we strongly recommend that all self-managed GitLab installations be upgraded to one of these versions immediately. GitLab.com is already running the patched version. GitLab Dedicated customers do not need to tak

  2. Jun 17, 2026 · NIST NVD

    Updated

    GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain conditions.

Affected

  • cpe gitlab/gitlabversion unspecified
  • cpe gitlab/gitlab18.11.0

Sources

  • CVE.orgVulnerability recordCVE-2026-5816

    Official CVE identifier

    cve.org
  • GitLab Security ReleasesVendor advisoryCVE-2026-5816

    On April 22, 2026, we released versions 18.11.1, 18.10.4, 18.9.6 for GitLab Community Edition (CE) and Enterprise Edition (EE). These versions contain important bug and security fixes, and we strongly recommend that all self-managed GitLab installations be upgraded to one of thes

    docs.gitlab.com
  • NIST NVDVulnerability recordCVE-2026-5816

    GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.10 before 18.10.4 and 18.11 before 18.11.1 that could have allowed an unauthenticated user to execute arbitrary JavaScript in a user's browser session due to improper path validation under certain condi

    nvd.nist.gov

References