wordpress is vulnerable to cross-site scripting (XSS). The attack is due to lack of sanitization of the output in wp_ajax_upload_attachment()
, allowing an attacker to inject arbitrary script through it.
core.trac.wordpress.org/changeset/45936
github.com/WordPress/WordPress/commit/4315d85d6576959f58a6a072249ed319bbea295d
lists.debian.org/debian-lts-announce/2019/10/msg00023.html
seclists.org/bugtraq/2020/Jan/8
wordpress.org/news/2019/09/wordpress-5-2-3-security-and-maintenance-release/
www.debian.org/security/2020/dsa-4599
www.debian.org/security/2020/dsa-4677