CVE-2026-4868
Analyzed Analyzed - Analysis Complete

Authentication Bypass in GitLab Duo AI Workflows

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 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

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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-2026-4868
EUVD
EUVD-2026-32620

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 From 18.8.0 (inc) to 18.10.7 (exc)
gitlab gitlab 19.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This vulnerability in GitLab Enterprise Edition affects certain versions before specific patch releases. It allows an authenticated user, under certain conditions, to trigger Duo AI workflows that run under another user's identity. This happens due to improper user identity resolution when triggering these workflow runners.

Impact Analysis

The vulnerability can lead to unauthorized actions being performed under another user's identity within GitLab. This can result in compromised integrity and confidentiality of workflows, potentially allowing an attacker to execute actions or access data they should not have permission for.

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 on the 18.8 to 18.10 series, 18.11.4 or later if you are on the 18.11 series, or 19.0.1 or later if you are on the 19.0 series.

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