What is CVE-2018-19584?

CVE-2018-19584 is a high-severity vulnerability in GitLab, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2019-07-10.

How severe is CVE-2018-19584?

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

Auth bypass in GitLab

CVE-2018-19584

GitLab EE, versions 11.x before 11.3.11, 11.4 before 11.4.8, and 11.5 before 11.5.1, is vulnerable to an insecure direct object reference vulnerability that allows authenticated, but unauthorized, users to view members and milestone details of private groups.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2019-07-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.015 (74.1th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

GitLab

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

gitlab.com/gitlab-org/gitlab-ce/issues/52522 (Exploit, Vendor Advisory)
about.gitlab.com/2018/11/28/security-release-gitlab-11-dot-5-dot-1-released/ (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2018-19584?: CVE-2018-19584 is a high-severity vulnerability in GitLab, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2019-07-10.
How severe is CVE-2018-19584?: High severity. CVSS v3 base score is 7.5 out of 10.