What is CVE-2019-15590?

CVE-2019-15590 is a high-severity vulnerability in GitLab, classified under Improper Access Control. CVSS score: 7.5/10. Published 2020-01-28.

How severe is CVE-2019-15590?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in GitLab

CVE-2019-15590

An access control issue exists in < 12.3.5, < 12.2.8, and < 12.1.14 for GitLab Community Edition (CE) and Enterprise Edition (EE) where private merge requests and issues would be disclosed with the Group Search feature provided by Elasticsearch integration

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

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

GitLab
GitLab Ee — versions before 12.3.5, before 12.2.8, before 12.1.14

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

hackerone.com/reports/701144 (Permissions Required, Third Party Advisory)
about.gitlab.com/releases/2019/10/07/security-release-gitlab-12-dot-3-dot-5-rel… (Vendor Advisory)

Frequently asked questions

What is CVE-2019-15590?: CVE-2019-15590 is a high-severity vulnerability in GitLab, classified under Improper Access Control. CVSS score: 7.5/10. Published 2020-01-28.
How severe is CVE-2019-15590?: High severity. CVSS v3 base score is 7.5 out of 10.