CVE-2019-15731

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-09-16 · updated 2026-06-17
Weakness: CWE-918

Description

An issue was discovered in GitLab Community and Enterprise Edition 12.0 through 12.2.1. Non-members were able to comment on merge requests despite the repository being set to allow only project members to do so.

Affected products

GitLab: from 12.0.0 before 12.0.8; from 12.1.0 before 12.1.8; from 12.2.0 before 12.2.3 — fixed in 12.0.8, 12.1.8, 12.2.3

How to fix

Upgrade to a fixed version: GitLab 12.0.8, 12.1.8, 12.2.3. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/2019/08/29/security-release-gitlab-12-dot-2-dot-3-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/60465
https://about.gitlab.com/2019/08/29/security-release-gitlab-12-dot-2-dot-3-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/60465

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