What is CVE-2021-22223?

CVE-2021-22223 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-07-06.

How severe is CVE-2021-22223?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-22223 known to be exploited?

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

XSS in Gitlab

CVE-2021-22223

Client-Side code injection through Feature Flag name in GitLab CE/EE starting with 11.9 allows a specially crafted feature flag name to PUT requests on behalf of other users via clicking on a link

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (57.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Gitlab — versions >=11.9, <13.11.6, >=13.12, <13.12.6, >=14.0, <14.0.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

n0-traces/cve_

References

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

Frequently asked questions

What is CVE-2021-22223?: CVE-2021-22223 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-07-06.
How severe is CVE-2021-22223?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-22223 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.