CVE-2019-20041

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

wp_kses_bad_protocol in wp-includes/kses.php in WordPress before 5.3.1 mishandles the HTML5 colon named entity, allowing attackers to bypass input sanitization, as demonstrated by the javascript&colon; substring.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Dec 27, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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