CVE-2026-5173: Exposed Dangerous Method or Function in GitLab

Published Apr 8, 2026
·
Updated

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.

Other sources

GitLab has remediated an issue that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.

— GitLab

Affected Software

7 affected componentsFixes available
GitLab GitLab>=16.9.6<18.8.9, >=18.9<18.9.5, >=18.10<18.10.3
18.8.918.9.518.10.3
GitLab GitLab>=16.9.6<18.8.9
GitLab GitLab>=18.9.0<18.9.5
GitLab GitLab>=18.10.0<18.10.3
GitLab GitLab>=16.9.6<18.8.9
GitLab GitLab>=18.9.0<18.9.5
GitLab GitLab>=18.10.0<18.10.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 18.8.9Fixed in 18.9.5Fixed in 18.10.3
  2. Upgrade

    Upgrade GitLab CE/EE to a version that resolves this vulnerability.

    Fixed in 18.8.9
  3. Upgrade

    Upgrade GitLab CE/EE to a version that resolves this vulnerability.

    Fixed in 18.9.5
  4. Upgrade

    Upgrade GitLab CE/EE to a version that resolves this vulnerability.

    Fixed in 18.10.3

Event History

Apr 8, 2026
CVE Published
via MITRE·10:25 PM
Data Sourced
via MITRE·10:25 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·11:17 PM
DescriptionSeverityWeaknessAffected Software
Apr 22, 2026
Data Sourced
via GitLab·01:52 PM
DescriptionSeverityAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

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