What is CVE-2021-45472?

CVE-2021-45472 is a medium-severity vulnerability in Mediawiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-24.

How severe is CVE-2021-45472?

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

XSS in Mediawiki

CVE-2021-45472

In MediaWiki through 1.37, XSS can occur in Wikibase because an external identifier property can have a URL format that includes a $1 formatter substitution marker, and the javascript: URL scheme (among others) can be used.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (58.5th 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

Mediawiki
Fedoraproject Fedora — versions 35
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_FEDORA, vendor-advisory)

Frequently asked questions

What is CVE-2021-45472?: CVE-2021-45472 is a medium-severity vulnerability in Mediawiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-12-24.
How severe is CVE-2021-45472?: Medium severity. CVSS v3 base score is 6.1 out of 10.