---
id: CVE-2026-12664
title: Incorrect Authorization in GitLab
summary: >-
  GitLab has remediated an issue in GitLab CE/EE affecting all versions from
  18.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under
  certain conditions, could have allowed an authenticated user with a
  read_api-scoped tok…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-863
vendor: GitLab
product: GitLab
affected:
  - GitLab >= 18.2 < 19.3.6
  - GitLab >= 19.4 < 19.4.3
  - GitLab >= 19.5 < 19.5.1
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T23:35:30.436Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-12664'
references:
  - url: 'https://gitlab.com/gitlab-org/gitlab/-/work_items/603510'
  - url: 'https://hackerone.com/reports/3735499'
    label: 'HackerOne Bug Bounty Report #3735499'
  - url: >-
      https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/
tags:
  - cve.org
ingestedAt: '2026-10-22T00:21:21.860Z'
---

## Overview

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an authenticated user with a read_api-scoped token to retrieve a project's incoming email address and create work items, bypassing the token's restrictions, due to insufficient scope enforcement on a GraphQL field.

## Affected

- `GitLab >= 18.2 < 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.