---
id: CVE-2026-78252
title: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under
  certain conditions, an authenticated user could have induced a targeted user
  to perform…
summary: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under
  certain conditions, an authenticated user could have induced a targeted user
  to perform…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L'
cwe:
  - CWE-79
vendor: GitLab
product: GitLab
affected:
  - GitLab >= 15.3 < 19.1.8
  - GitLab >= 19.2 < 19.2.6
  - GitLab >= 19.3 < 19.3.2
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:23:34.623'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78252'
references:
  - url: >-
      https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/
    label: cve@gitlab.com
  - url: 'https://gitlab.com/gitlab-org/gitlab/-/work_items/621447'
    label: cve@gitlab.com
  - url: 'https://hackerone.com/reports/3917471'
    label: cve@gitlab.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T15:39:58.423500Z'
ingestedAt: '2026-09-16T06:51:06.260Z'
epss: 0.00392
epssPercentile: 0.30583
---

## Overview

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper sanitization of user-controlled data in the Markdown JSON table renderer.

## Remediation

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