Description
WordPress before 5.2.3 has an issue with URL sanitization in wp_kses_bad_protocol_once in wp-includes/kses.php that can lead to cross-site scripting (XSS) attacks.
References (8)
Core 8
Core References
Exploit, Third Party Advisory x_refsource_misc
https://wpvulndb.com/vulnerabilities/9867
Release Notes, Vendor Advisory x_refsource_misc
https://wordpress.org/news/2019/09/wordpress-5-2-3-security-and-maintenance-release/
Patch, Vendor Advisory x_refsource_misc
https://core.trac.wordpress.org/changeset/45997
Patch, Third Party Advisory x_refsource_misc
https://github.com/WordPress/WordPress/commit/30ac67579559fe42251b5a9f887211bf61a8ed68
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/10/msg00023.html
Mailing List, Third Party Advisory mailing-list
x_refsource_bugtraq
https://seclists.org/bugtraq/2020/Jan/8
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4599
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4677
Scores
CVSS v3
6.1
EPSS
0.0238
EPSS Percentile
85.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-79
Status
published
Products (4)
debian/debian_linux
8.0
debian/debian_linux
9.0
debian/debian_linux
10.0
wordpress/wordpress
< 5.2.3
Published
Sep 11, 2019
Tracked Since
Feb 18, 2026