CVE-2026-6821
Received
Received - Intake
Authentication Bypass in GitLab EE via Merge Request API
Vulnerability report for CVE-2026-6821, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-12
Last updated on: 2026-08-12
Assigner: GitLab Inc.
Description
Description
GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to bypass IP-based access restrictions and read limited merge request information from a private project due to missing authorization checks in a merge requests API endpoint.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gitlab | gitlab_ee | From 12.0 (inc) to 19.0.6 (exc) |
| gitlab | gitlab_ee | From 19.1.0 (inc) to 19.1.4 (exc) |
| gitlab | gitlab_ee | From 19.2.0 (inc) to 19.2.2 (exc) |
| gitlab | gitlab_ee | From 19.1 (inc) to 19.1.4 (exc) |
| gitlab | gitlab_ee | From 19.2 (inc) to 19.2.2 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
