CVE-2021-31550

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

An issue was discovered in the CommentBox extension for MediaWiki through 1.35.2. Via crafted configuration variables, a malicious actor could introduce XSS payloads into various layers.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Commentbox/+/651934/Issue Tracking, Vendor Advisory
https://phabricator.wikimedia.org/T270767Third Party Advisory
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Commentbox/+/651934/Issue Tracking, Vendor Advisory
https://phabricator.wikimedia.org/T270767Third Party Advisory

Timeline

Published: Apr 22, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

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