GitLab EE CSRF token leak via repo refs (18.4<18.4.4,18.5<18.5.2)
CVE-2025-11990 Published on November 15, 2025
Improper Handling of URL Encoding (Hex Encoding) in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated user to gain CSRF tokens by exploiting improper input validation in repository references combined with redirect handling weaknesses.
Vulnerability Analysis
CVE-2025-11990 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is a Hex Encoding Vulnerability?
The software does not properly handle when all or part of an input has been URL encoded.
CVE-2025-11990 has been classified to as a Hex Encoding vulnerability or weakness.
Products Associated with CVE-2025-11990
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Affected Versions
GitLab:- Version 18.4 and below 18.4.4 is affected.
- Version 18.5 and below 18.5.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.