CVE-2023-0450

Severity: medium (CVSS 4.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-04-05 · updated 2026-06-17

Description

An issue has been discovered in GitLab affecting all versions starting from 8.1 to 15.8.5, and from 15.9 to 15.9.4, and from 15.10 to 15.10.1. It was possible to add a branch with an ambiguous name that could be used to social engineer users.

Affected products

GitLab: from 8.1.0 before 15.8.5; from 15.9.0 before 15.9.4; 15.10.0 — fixed in 15.8.5, 15.9.4

How to fix

Upgrade to a fixed version: GitLab 15.8.5, 15.9.4. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0450.json
https://gitlab.com/gitlab-org/gitlab/-/issues/388962
https://hackerone.com/reports/1831547
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0450.json
https://gitlab.com/gitlab-org/gitlab/-/issues/388962
https://hackerone.com/reports/1831547

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