What is CVE-2021-22182?

CVE-2021-22182 is a low-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2021-03-03.

How severe is CVE-2021-22182?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in GitLab

CVE-2021-22182

An issue has been discovered in GitLab affecting all versions starting with 13.7. GitLab was vulnerable to a stored XSS in merge request.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.5% 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 — versions >=13.8, <13.8.2, >=13.7, <13.7.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gitlab.com/gitlab-org/gitlab/-/issues/280779 (Exploit, Third Party Advisory)
hackerone.com/reports/1030189 (Permissions Required, Third Party Advisory)
gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22182.json (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22182?: CVE-2021-22182 is a low-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2021-03-03.
How severe is CVE-2021-22182?: Low severity. CVSS v3 base score is 3.5 out of 10.