CVE-2023-0050

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 92.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-09 · updated 2026-06-17
Weakness: CWE-79

Description

An issue has been discovered in GitLab affecting all versions starting from 13.7 before 15.7.8, all versions starting from 15.8 before 15.8.4, all versions starting from 15.9 before 15.9.2. A specially crafted Kroki diagram could lead to a stored XSS on the client side which allows attackers to perform arbitrary actions on behalf of victims.

Affected products

GitLab: from 13.7 before 15.7.8; from 15.8 before 15.8.4; from 15.9 before 15.9.2 — fixed in 15.7.8, 15.8.4, 15.9.2

How to fix

Upgrade to a fixed version: GitLab 15.7.8, 15.8.4, 15.9.2. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0050.json
https://gitlab.com/gitlab-org/gitlab/-/issues/387023
https://hackerone.com/reports/1731349
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0050.json
https://gitlab.com/gitlab-org/gitlab/-/issues/387023
https://hackerone.com/reports/1731349

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