CVE-2026-10518
Received Received - Intake

Authentication Bypass in GitLab EE Allows Unauthorized Access

Vulnerability report for CVE-2026-10518, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: GitLab Inc.

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 17.9 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 guest-level permissions to read private security policy content they were not authorized to access due to improper authorization enforcement.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 9 associated CPEs
Vendor Product Version / Range
gitlab gitlab_ee From 17.9 (inc) to 19.2.7 (exc)
gitlab gitlab_ee From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_ee From 19.4 (inc) to 19.4.1 (exc)
gitlab gitlab_community_edition From 19.2 (inc) to 19.2.7 (exc)
gitlab gitlab_enterprise_edition From 19.2 (inc) to 19.2.7 (exc)
gitlab gitlab_community_edition From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_enterprise_edition From 19.3 (inc) to 19.3.3 (exc)
gitlab gitlab_community_edition From 19.4 (inc) to 19.4.1 (exc)
gitlab gitlab_enterprise_edition 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.

Attack-Flow Graph

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Executive Summary

This vulnerability in GitLab EE allows an authenticated user with guest-level permissions to read private security policy content they are not authorized to access due to improper authorization enforcement. It affects versions from 17.9 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1.

Impact Analysis

An attacker with guest access could view sensitive security policies, potentially exposing confidential information or internal security measures. This could lead to further exploitation or data breaches if combined with other vulnerabilities.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements for data protection such as GDPR or HIPAA. Organizations may face legal penalties or reputational damage if such breaches occur.

Mitigation Strategies

Upgrade GitLab EE to version 19.2.7, 19.3.3, or 19.4.1 or later to address the improper authorization enforcement issue affecting private security policy content access.

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