CVE-2019-15592

Severity: medium (CVSS 4.3 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: 2020-02-14 · updated 2026-06-17
Weakness: CWE-200

Description

GitLab 12.2.2 and below contains a security vulnerability that allows a guest user in a private project to see the merge request ID associated to an issue via the activity timeline.

Affected products

GitLab: from 11.2.0 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/releases/2019/08/29/security-release-gitlab-12-dot-2-dot-3-released/
https://hackerone.com/reports/588876
https://about.gitlab.com/releases/2019/08/29/security-release-gitlab-12-dot-2-dot-3-released/
https://hackerone.com/reports/588876

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