What is CVE-2021-22236?

CVE-2021-22236 is a medium-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 5.5/10. Published 2021-08-25.

How severe is CVE-2021-22236?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Auth bypass in GitLab

CVE-2021-22236

Due to improper handling of OAuth client IDs, new subscriptions generated OAuth tokens on an incorrect OAuth client application. This vulnerability is present in GitLab CE/EE since version 14.1.

Vulnerability class: Broken Access Control

Published 2021-08-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.009 (57.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

GitLab — versions >=14.1, <14.1.2

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

gitlab.com/gitlab-org/gitlab/-/issues/334925 (Broken Link)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22236.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22236?: CVE-2021-22236 is a medium-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 5.5/10. Published 2021-08-25.
How severe is CVE-2021-22236?: Medium severity. CVSS v3 base score is 5.5 out of 10.