CVE-2023-3922: URL Redirection to Untrusted Site ('Open Redirect') in GitLab

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-29 · updated 2026-06-17
Weakness: CWE-601

Description

An issue has been discovered in GitLab affecting all versions starting from 8.15 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible to hijack some links and buttons on the GitLab UI to a malicious page.

Affected products

GitLab: from 8.15 before 16.2.8; from 16.3.0 before 16.3.5; 16.4.0 — fixed in 16.2.8, 16.3.5

How to fix

Upgrade to a fixed version: GitLab 16.2.8, 16.3.5. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/gitlab/-/issues/394770
https://hackerone.com/reports/1887323
https://gitlab.com/gitlab-org/gitlab/-/issues/394770
https://hackerone.com/reports/1887323

Get alerted when CVE-2023-3922 or the next vulnerability affects your stack