CVE-2026-92874
Received Received - Intake

Authentication Bypass in GitLab CE/EE via MCP Token

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: GitLab Inc.

Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user with an MCP-scoped token to perform actions beyond the intended scope of that token due to improper authorization checks.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-92874
EUVD
EUVD-2026-85732

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
gitlab gitlab_ce From 18.3 (inc) to 19.2.7 (exc)
gitlab gitlab_ee From 18.3 (inc) to 19.2.7 (exc)
gitlab gitlab_ce From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_ee From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_ce From 19.4 (inc) to 19.4.1 (exc)
gitlab gitlab_ee From 19.4 (inc) to 19.4.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

This vulnerability in GitLab CE/EE versions before 19.2.7, 19.3.3, and 19.4.1 allows an authenticated user with an MCP-scoped token to perform actions outside the intended scope of that token due to improper authorization checks.

Impact Analysis

An attacker with a limited token could escalate privileges and access unauthorized data or perform actions beyond their intended permissions, potentially leading to data breaches or unauthorized modifications.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements for GDPR, HIPAA, and other regulations that mandate strict access controls and data protection.

Mitigation Strategies

Upgrade GitLab CE/EE to version 19.2.7, 19.3.3, or 19.4.1 or later to address the improper authorization checks. Review and revoke any MCP-scoped tokens that may have excessive permissions.

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