CVE-2026-4868

Authorization Bypass Through User-Controlled Key in GitLab

Published: May 27, 2026Updated: May 27, 2026 Sources: CVE List NVD BDUCWE-639

8.2HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:NAvailability

None

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Weaknesses

CWE-639

Affected Products

GitLab Inc.

commercial·US

GitlabOn-premWeb App

DevTools & CI / source-control

GitLab

commercial·NLaka gitlab ce/ee

GitLabSaaSWeb App

DevTools & CI / ci-cd

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/

about.gitlab.com

https://hackerone.com/reports/3619872

hackerone.com

https://gitlab.com/gitlab-org/gitlab/-/work_items/594809

gitlab.com

and 1 more references View all →

News mentions

⚡ Weekly Recap: New Linux Flaw, PAN-OS Exploit, AI-Powered Attacks, OAuth Phishing and More
en·The Hacker News·Jun 1, 2026 Advisory Gogs rce

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