GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.0 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, 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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
GitLab GitLab unaffected
Version Status Constraints
15.0 affected < 19.3.6
19.4 affected < 19.4.3
19.5 affected < 19.5.1

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Gitlab Subscribe
Gitlab Subscribe
Advisories

No advisories yet.

Fixes

Solution

Upgrade to versions 19.3.6, 19.4.3, 19.5.1 or above.

Workaround

No workaround given by the vendor.

References
Link Providers
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/ cve-icon
https://gitlab.com/gitlab-org/gitlab/-/work_items/632207 cve-icon
https://hackerone.com/reports/3963293 cve-icon
History

Wed, 21 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
Description GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.0 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, 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.
Title Use of Cache Containing Sensitive Information in GitLab
First Time appeared Gitlab
Gitlab gitlab
Weaknesses CWE-524
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab gitlab
References
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-10-21T23:34:30.427Z

Reserved: 2026-10-05T18:35:06.853Z

Link: CVE-2026-105711

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses