---
id: CVE-2026-100755
title: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  16.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under
  certain deployment configurations, could have allowed an authenticated user to
  poison c…
summary: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  16.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under
  certain deployment configurations, could have allowed an authenticated user to
  poison c…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-349
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T02:16:55.883'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100755'
references:
  - url: >-
      https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/
    label: cve@gitlab.com
  - url: 'https://gitlab.com/gitlab-org/gitlab/-/work_items/627507'
    label: cve@gitlab.com
tags:
  - nvd
ingestedAt: '2026-10-13T03:13:18.985Z'
---

## Overview

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain deployment configurations, could have allowed an authenticated user to poison cached page content served to other users due to improper cache key construction.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.