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Description

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.

PUBLISHED Reserved 2025-10-20 | Published 2025-11-15 | Updated 2025-11-17 | Assigner GitLab




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

Problem types

CWE-177: Improper Handling of URL Encoding (Hex Encoding)

Product status

Default status
unaffected

18.4 (semver) before 18.4.4
affected

18.5 (semver) before 18.5.2
affected

Credits

Thanks [swiftee](https://hackerone.com/swiftee) for reporting this vulnerability through our HackerOne bug bounty program finder

References

about.gitlab.com/...12/patch-release-gitlab-18-5-2-released/

gitlab.com/gitlab-org/gitlab/-/issues/577850 (GitLab Issue #577850) issue-tracking permissions-required

hackerone.com/reports/3257843 (HackerOne Bug Bounty Report #3257843) technical-description exploit permissions-required

cve.org (CVE-2025-11990)

nvd.nist.gov (CVE-2025-11990)

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