CVE-2026-6267: Insertion of Sensitive Information Into Sent Data in GitLab

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-29 · updated 2026-08-03
Weakness: CWE-201

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user with Developer role to access unauthorized information due to insufficient access controls on internal request handling.

Affected products

GitLab: from 10.1.0 before 19.0.5; from 19.1.0 before 19.1.3; 19.2.0 — fixed in 19.0.5, 19.1.3

How to fix

Upgrade to a fixed version: GitLab 19.0.5, 19.1.3. Check the vendor advisory for mitigations.

References

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/596606
https://hackerone.com/reports/3658324

Get alerted when CVE-2026-6267 or the next vulnerability affects your stack