What is CVE-2021-46146?

CVE-2021-46146 is a medium-severity vulnerability in MediaWiki, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-01-10.

How severe is CVE-2021-46146?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-46146 known to be exploited?

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

XSS in MediaWiki

CVE-2021-46146

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The WikibaseMediaInfo component is vulnerable to XSS via the caption fields for a given media file.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (43.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Mediawiki
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-46146?: CVE-2021-46146 is a medium-severity vulnerability in MediaWiki, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-01-10.
How severe is CVE-2021-46146?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-46146 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.