CVE-2026-105777

Medium

Description

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.

SeverityMedium

CVSS4.3

Exploit probability—

Product

Gitlab

PublishedOct 22, 2026

First seenOct 22, 2026

Weakness typeCWE-201CWE-201

How to fix

Update

gitlab gitlab19.3.6, 19.4.3 or later

Vendor advisories

docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/

Affected products

Product	Affected versions	Fixed in
gitlab gitlab	17.6.5 ≤ v < 19.3.6, 19.4.0 ≤ v < 19.4.3, 19.5.0	19.3.6, 19.4.3

Check your version

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