CVE-2026-5296
Analyzed Analyzed - Analysis Complete

Authentication Bypass in GitLab EE via Flow Restrictions

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: GitLab Inc.

Description
GitLab has remediated an issue in GitLab EE affecting all versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that when foundational flows were enabled at the group level, could have allowed an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.

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Meta Information

Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-07-07
AI Q&A
2026-05-27
EPSS Evaluated
2026-07-05
NVD
CVE-2026-5296
EUVD
EUVD-2026-32619

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
gitlab gitlab From 18.11.0 (inc) to 18.11.4 (exc)
gitlab gitlab 19.0.0
gitlab gitlab From 18.7.0 (inc) to 18.10.7 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

Attack-Flow Graph

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Impact Analysis

An authenticated user with developer-role permissions could bypass flow restrictions, potentially allowing them to perform actions or access resources that should have been restricted by the foundational flows configured at the group level.

Executive Summary

This vulnerability in GitLab Enterprise Edition (EE) affected versions from 18.7 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1. It occurred when foundational flows were enabled at the group level, allowing an authenticated user with developer-role permissions to bypass flow restrictions under certain conditions.

Mitigation Strategies

To mitigate this vulnerability, you should upgrade GitLab EE to a fixed version. Specifically, update to version 18.10.7 or later if you are using the 18.7 to 18.10 series, 18.11.4 or later if you are using the 18.11 series, or 19.0.1 or later if you are using the 19.0 series.

Additionally, review and consider disabling foundational flows at the group level if they are enabled, as the vulnerability involves bypassing flow restrictions when these flows are enabled.

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