Insertion of Sensitive Information Into Sent Data in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2026-105777
Published: October 22, 2026
Vulnerability identifier: #VU157243
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105777
CWE-ID: CWE-201
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to retrieve sensitive internal server credentials.
The vulnerability exists due to improper filtering of sensitive information in internal response headers when handling requests. A remote user can obtain exposed internal response header values to retrieve sensitive internal server credentials.
Affected software
GitLab Enterprise Edition
Gitlab Community Edition
Gitlab Community Edition
How to mitigate CVE-2026-105777
Install security update from vendor's website.
GitLab Enterprise Edition - addressed in versions 19.3.6, 19.4.3, 19.5.1
Gitlab Community Edition - addressed in versions 19.3.6, 19.4.3, 19.5.1
Gitlab Community Edition - addressed in versions 19.3.6, 19.4.3, 19.5.1