What’s Vulnerable › Vulnerabilities

CVE-2024-9183: Time-of-check Time-of-use (TOCTOU) Race Condition in GitLab

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-05 · updated 2026-09-26
• Weakness: CWE-367

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 prior to 18.4.5, 18.5 prior to 18.5.3, and 18.6 prior to 18.6.1 that could have allowed an authenticated user to obtain credentials from higher-privileged users and perform actions in their context under specific conditions.

Affected products

• GitLab: from 18.4.0 before 18.4.5; from 18.5.0 before 18.5.3; from 18.6.0 before 18.6.1 — fixed in 18.4.5, 18.5.3, 18.6.1

How to fix

Upgrade to a fixed version: GitLab 18.4.5, 18.5.3, 18.6.1. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/releases/2025/11/26/patch-release-gitlab-18-6-1-released/
• https://gitlab.com/gitlab-org/gitlab/-/issues/494478
• https://hackerone.com/reports/2707421

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