CVE-2021-30458

An issue was discovered in Wikimedia Parsoid before 0.11.1 and 0.12.x before 0.12.2. An attacker can send crafted wikitext that Utils/WTUtils.php will transform by using a <meta> tag, bypassing sanitization steps, and potentially allowing for XSS.

• CWE-79

• https://phabricator.wikimedia.org/T279451Issue Tracking, Vendor Advisory
• https://security.gentoo.org/glsa/202107-40Third Party Advisory
• https://www.mediawiki.org/wiki/ParsoidVendor Advisory
• https://phabricator.wikimedia.org/T279451Issue Tracking, Vendor Advisory
• https://security.gentoo.org/glsa/202107-40Third Party Advisory
• https://www.mediawiki.org/wiki/ParsoidVendor Advisory

Published

Apr 9, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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