What is CVE-2021-45473?

CVE-2021-45473 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-2021-45473?

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

XSS in Mediawiki

CVE-2021-45473

In MediaWiki through 1.37, Wikibase item descriptions allow XSS, which is triggered upon a visit to an action=info URL (aka a page-information sidebar).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.012 (66.3th 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 (Exploit, 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-2021-45473?: CVE-2021-45473 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-2021-45473?: Medium severity. CVSS v3 base score is 6.1 out of 10.