CVE-2026-12664
Received Received - Intake

Authenticated User Bypass in GitLab CE/EE

Publication date: 2026-10-22

Last updated on: 2026-10-22

Assigner: GitLab Inc.

Description
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.

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Meta Information

Published
2026-10-22
Last Modified
2026-10-22
Generated
2026-10-22
AI Q&A
2026-10-22
EPSS Evaluated
N/A
NVD
CVE-2026-12664

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
GitLab GitLab 18.2
GitLab GitLab 19.4
GitLab GitLab 19.5

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.

Attack-Flow Graph

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Executive Summary

GitLab had a flaw in versions 18.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 where an authenticated user with a read_api-scoped token could retrieve a project's incoming email address and create work items. This happened because the token's restrictions were bypassed due to insufficient scope enforcement on a GraphQL field.

Impact Analysis

An attacker with a read_api-scoped token could access sensitive project information like incoming email addresses and create unauthorized work items. This could lead to data leaks or unauthorized modifications in the project.

Mitigation Strategies

Upgrade GitLab to a patched version (19.3.6, 19.4.3, or 19.5.1 or later) to address the insufficient scope enforcement issue.

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