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Open-source package vulnerability · GitLab

CVE-2026-105711: GitLab CE/EE use of cache containing sensitive information in merge request title rendering

lowCVSS 3.1 3.5

When a merge request in a public project referenced a confidential issue from a private project, an authenticated user with no project membership could have read the confidential issue's title, due to a viewer-independent fragment cache key that incorrectly shared per-user-redacted rendered content across all users.

Published Oct 21, 2026

Advisory details

From the National Vulnerability Database. This product uses the NVD API but is not endorsed or certified by the NVD.

When a merge request in a public project referenced a confidential issue from a private project, an authenticated user with no project membership could have read the confidential issue's title, due to a viewer-independent fragment cache key that incorrectly shared per-user-redacted rendered content across all users. Impacted versions: GitLab CE/EE all versions from 15.0 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1. Fixed in GitLab CE/EE 19.5.1, 19.4.3 and 19.3.6, released October 21, 2026.

Credited to 20kilograma.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

Coverage on the Beam blog

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