Vulnerability Report

CVE-2026-4868

Title: GitLab EE Duo AI Workflow Identity Impersonation

Impersonation

Proof Of Concept

No public PoC currently indexed for CVE-2026-4868.

CWE Category CWE-639

Published Date May 27, 2026

Modified Date May 27, 2026

Exploit Status Not Found

Score 8.2 CVSS v3.1

Exploit Probability (EPSS)

0.01%

Vulnerability Summary

CVE-2026-4868: 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.

Impacted Vendors

gitlab 1

Reference Links

https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/ https://gitlab.com/gitlab-org/gitlab/-/work_items/594809 https://hackerone.com/reports/3619872

CVSS v3.1

Source Entity [email protected]

Severity HIGH

8.2

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-4868 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 27, 2026 MODIFIED

Vulnerability data updated via NVD.

May 27, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity HIGH

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected Stack

No specific products linked.