CVE-2025-11990

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.

Affected

GitLab

CVSS v3.1 NVD

3.5 LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

CVSS v3.1 GITLAB

3.1 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS

0.32% chance of exploitation in the next 30 days, 24th percentile

Published

2025-11-15

Updated

2025-11-17

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3257843

Security advisories

• https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released

References

• CVE Record
• NVD entry