What is CVE-2020-11649?

CVE-2020-11649 is a medium-severity vulnerability in GitLab, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2020-04-22.

How severe is CVE-2020-11649?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in GitLab

CVE-2020-11649

An issue was discovered in GitLab CE and EE 8.15 through 12.9.2. Members of a group could still have access after the group is deleted.

Vulnerability class: Broken Authentication

Published 2020-04-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

GitLab

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

about.gitlab.com/blog/categories/releases/ (Vendor Advisory)
about.gitlab.com/releases/2020/04/14/critical-security-release-gitlab-12-dot-9-… (Vendor Advisory)

Frequently asked questions

What is CVE-2020-11649?: CVE-2020-11649 is a medium-severity vulnerability in GitLab, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2020-04-22.
How severe is CVE-2020-11649?: Medium severity. CVSS v3 base score is 6.5 out of 10.