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.
CPE | Name | Operator | Version |
---|---|---|---|
debian_linux | eq | 8.0 | |
debian_linux | eq | 9.0 | |
debian_linux | eq | 10.0 | |
wordpress | lt | 5.3.1 |
github.com/WordPress/wordpress-develop/commit/b1975463dd995da19bb40d3fa0786498717e3c53
lists.debian.org/debian-lts-announce/2020/01/msg00010.html
seclists.org/bugtraq/2020/Jan/8
wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/
www.debian.org/security/2020/dsa-4599
www.debian.org/security/2020/dsa-4677