CVE-2023-2478

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-08 · updated 2026-06-17
Weakness: CWE-732

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.4 before 15.9.7, all versions starting from 15.10 before 15.10.6, all versions starting from 15.11 before 15.11.2. Under certain conditions, a malicious unauthorized GitLab user may use a GraphQL endpoint to attach a malicious runner to any project.

Affected products

GitLab: from 15.4.0 before 15.9.7; from 15.10.0 before 15.10.6; from 15.11.0 before 15.11.2 — fixed in 15.10.6, 15.11.2, 15.9.7

How to fix

Upgrade to a fixed version: GitLab 15.10.6, 15.11.2, 15.9.7. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2478.json
https://gitlab.com/gitlab-org/gitlab/-/issues/409470
https://hackerone.com/reports/1969599
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2478.json
https://gitlab.com/gitlab-org/gitlab/-/issues/409470
https://hackerone.com/reports/1969599
https://gitlab.com/gitlab-org/gitlab/-/issues/409470

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