CVE-2019-5461

Severity: low (CVSS 3.5 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: yes
Published: 2019-09-09 · updated 2026-06-17
Weakness: CWE-20

Description

An input validation problem was discovered in the GitHub service integration which could result in an attacker being able to make arbitrary POST requests in a GitLab instance's internal network. This vulnerability was addressed in 12.1.2, 12.0.4, and 11.11.6.

Affected products

GitLab: from 11.11.0 before 11.11.7; from 12.0.0 before 12.0.4; from 12.1.0 before 12.1.2 — fixed in 11.11.7, 12.0.4, 12.1.2

How to fix

Upgrade to a fixed version: GitLab 11.11.7, 12.0.4, 12.1.2. Check the vendor advisory for mitigations.

References

https://gitlab.com//gitlab-org/gitlab-ce/issues/54649
https://hackerone.com/reports/446593
https://about.gitlab.com/2019/07/29/security-release-gitlab-12-dot-1-dot-2-released/
https://gitlab.com//gitlab-org/gitlab-ce/issues/54649
https://hackerone.com/reports/446593

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