---
id: CVE-2026-105711
title: Use of Cache Containing Sensitive Information in GitLab
summary: >-
  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 proje…
severity: low
cvss: 3.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-524
vendor: GitLab
product: GitLab
affected:
  - GitLab >= 15.0 < 19.3.6
  - GitLab >= 19.4 < 19.4.3
  - GitLab >= 19.5 < 19.5.1
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T23:34:30.427Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-105711'
references:
  - url: 'https://gitlab.com/gitlab-org/gitlab/-/work_items/632207'
  - url: 'https://hackerone.com/reports/3963293'
    label: 'HackerOne Bug Bounty Report #3963293'
  - url: >-
      https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/
tags:
  - cve.org
ingestedAt: '2026-10-22T00:21:21.863Z'
---

## Overview

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.

## Affected

- `GitLab >= 15.0 < 19.3.6`
- `GitLab >= 19.4 < 19.4.3`
- `GitLab >= 19.5 < 19.5.1`

## Remediation

Upgrade to versions 19.3.6, 19.4.3, 19.5.1 or above.