CVE-2026-78335
Received Received - Intake

Authenticated User Access Bypass in GitLab CE/EE

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: GitLab Inc.

Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user holding a project-scoped fine-grained Personal Access Token to modify integrations belonging to a group outside the token's scope, due to incorrect authorization checks.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-78335
EUVD
EUVD-2026-98221

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
GitLab GitLab 19.1
GitLab GitLab 19.3
GitLab GitLab 19.4

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

GitLab had a security flaw in versions 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2. An authenticated user with a project-scoped fine-grained Personal Access Token could modify integrations outside the token's scope due to incorrect authorization checks.

Detection Guidance

This vulnerability involves incorrect authorization checks for project-scoped fine-grained Personal Access Tokens in GitLab. To detect it, check GitLab instance versions and review access logs for unauthorized modification of group integrations. Ensure all instances are updated to versions 19.2.8, 19.3.5, or 19.4.2 or later.

Impact Analysis

An attacker with a project-scoped token could alter integrations for groups they should not have access to, potentially leading to unauthorized changes in project settings or workflows.

Compliance Impact

This vulnerability could lead to unauthorized access or modifications, potentially violating data protection requirements under GDPR or HIPAA by allowing unintended changes to integrations handling sensitive data.

Mitigation Strategies

Update GitLab to version 19.2.8, 19.3.5, or 19.4.2 or later to address the authorization flaw. Review and revoke any project-scoped fine-grained Personal Access Tokens that may have been misused.

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