What is CVE-2021-22196?

CVE-2021-22196 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2021-04-02.

How severe is CVE-2021-22196?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2021-22196 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Gitlab

CVE-2021-22196

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.4. It was possible to exploit a stored cross-site-scripting in merge request via a specifically crafted branch name.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (57.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N.

Affected products

Gitlab — versions >=13.4, <13.8.7, >=13.9, <13.9.5, >=13.10, <13.10.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

0xfschott/CVE-search

References

cve@gitlab.com (x_refsource_MISC, Broken Link)
cve@gitlab.com (Permissions Required, Third Party Advisory, x_refsource_MISC)
cve@gitlab.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-22196?: CVE-2021-22196 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2021-04-02.
How severe is CVE-2021-22196?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2021-22196 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.