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Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.5 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user to create a repository where the content displayed in the web interface differed from the content available for download, due to improper handling of Git reference name resolution.

PUBLISHED Reserved 2025-10-30 | Published 2026-07-08 | Updated 2026-07-09 | Assigner GitLab




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

Problem types

CWE-706: Use of Incorrectly-Resolved Name or Reference

Product status

Default status
unaffected

16.5 (semver) before 18.11.7
affected

19.0 (semver) before 19.0.4
affected

19.1 (semver) before 19.1.2
affected

Credits

Thanks [shells3c](https://hackerone.com/shells3c) for reporting this vulnerability through our HackerOne bug bounty program finder

References

hackerone.com/reports/3351460 (HackerOne Bug Bounty Report #3351460) technical-description exploit permissions-required

gitlab.com/gitlab-org/gitlab/-/work_items/578988

docs.gitlab.com/...hes/patch-release-gitlab-19-1-2-released/

cve.org (CVE-2025-12506)

nvd.nist.gov (CVE-2025-12506)

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