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: substring.

Remediation

References

CVE-2019-20041

Related Vulnerabilities

WordPress Plugin Custom Login Page Customizer-LoginPress Unspecified Vulnerability (1.1.15)

Atlassian Jira Other Vulnerability (CVE-2019-20101)

Chamilo Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Vulnerability (CVE-2018-20329)

Oracle JRE CVE-2012-5083 Vulnerability (CVE-2012-5083)

WordPress 3.7.x Multiple Vulnerabilities (3.7 - 3.7.34)

Severity

Critical

Classification

CVE-2019-20041 CWE-20 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Tags

Missing Update Known Vulnerabilities