CVE-2023-0485

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-03 · updated 2026-06-17
Weakness: CWE-668

Description

An issue has been discovered in GitLab affecting all versions starting from 13.11 before 15.8.5, all versions starting from 15.9 before 15.9.4, all versions starting from 15.10 before 15.10.1. It was possible that a project member demoted to a user role to read project updates by doing a diff with a pre-existing fork.

Affected products

GitLab: from 13.11 before 15.8.5; from 15.9 before 15.9.4; from 15.11 before 15.11.1 — fixed in 15.11.1, 15.8.5, 15.9.4

How to fix

Upgrade to a fixed version: GitLab 15.11.1, 15.8.5, 15.9.4. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0485.json
https://gitlab.com/gitlab-org/gitlab/-/issues/389191
https://hackerone.com/reports/1837937
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-0485.json
https://gitlab.com/gitlab-org/gitlab/-/issues/389191
https://hackerone.com/reports/1837937

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