CVE-2021-30458

—

CVSS 3.1

6.1 medium

EPSS

<1%p60

Published

Apr 9, 2021 (Apr 9, 2021)

Modified

Jun 17, 2026

Description

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 tag, bypassing sanitization steps, and potentially allowing for XSS.

Vendors: wikimedia
Products: parsoid
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.0%)

In the news0 stories

No ingested article mentions this CVE yet.