CVE-2026-4868

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.

CVSS v3.1 Score

8.2

HIGH

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

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
gitlab	gitlab	18.8.0 — 18.10.7
gitlab	gitlab	18.11.0 — 18.11.4
gitlab	gitlab	All

References

Advisories & Patches

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

Other References

https://gitlab.com/gitlab-org/gitlab/-/work_items/594809 https://hackerone.com/reports/3619872

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-4868? +

CVE-2026-4868 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2026-4868? +

CVE-2026-4868 affects products from gitlab, specifically: gitlab. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-4868? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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