What is CVE-2019-15579?

CVE-2019-15579 is a medium-severity vulnerability in GitLab, classified under Information Disclosure. CVSS score: 5.3/10. Published 2020-01-28.

How severe is CVE-2019-15579?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in GitLab

CVE-2019-15579

An information disclosure exists in < 12.3.2, < 12.2.6, and < 12.1.12 for GitLab Community Edition (CE) and Enterprise Edition (EE) where the assignee(s) of a confidential issue in a private project would be disclosed to a guest via milestones.

Vulnerability class: Information Disclosure

Published 2020-01-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.6th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

GitLab
GitLab Ce/ee — versions before 12.3.2, before 12.2.6, before 12.1.12

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

about.gitlab.com/blog/2019/09/30/security-release-gitlab-12-dot-3-dot-2-release… (Vendor Advisory)
hackerone.com/reports/635516 (Permissions Required, Third Party Advisory)

Frequently asked questions

What is CVE-2019-15579?: CVE-2019-15579 is a medium-severity vulnerability in GitLab, classified under Information Disclosure. CVSS score: 5.3/10. Published 2020-01-28.
How severe is CVE-2019-15579?: Medium severity. CVSS v3 base score is 5.3 out of 10.