CVE-2026-105777

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6.5 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have retrieved sensitive internal server credentials due to improper filtering of internal response headers.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - cve@gitlab.com

Published

2026-10-21

Last modified

2026-10-27

Weaknesses

CWE-201

Affected products

• Gitlab (Gitlab)

References

• https://gitlab.com/gitlab-org/gitlab/-/work_items/597022
• https://hackerone.com/reports/3657282
• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/