CVE-2023-0155

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-05-03 · updated 2026-06-17
Weakness: CWE-601

Description

An issue has been discovered in GitLab CE/EE affecting all versions before 15.8.5, 15.9.4, 15.10.1. Open redirects was possible due to framing arbitrary content on any page allowing user controlled markdown

Affected products

GitLab: before 15.8.5; from 15.9 before 15.9.5; from 15.10 before 15.10.1 — fixed in 15.10.1, 15.8.5, 15.9.5

How to fix

Upgrade to a fixed version: GitLab 15.10.1, 15.8.5, 15.9.5. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0155.json
https://gitlab.com/gitlab-org/gitlab/-/issues/387638
https://hackerone.com/reports/1817250
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0155.json
https://gitlab.com/gitlab-org/gitlab/-/issues/387638
https://hackerone.com/reports/1817250

Get alerted when CVE-2023-0155 or the next vulnerability affects your stack