Improper access control in WordPress - CVE-2020-28036
Published: November 2, 2020 / Updated: November 9, 2020
Vulnerability identifier: #VU48202
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-28036
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in wp-includes/class-wp-xmlrpc-server.php. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application by using XML-RPC to comment on a post.
Affected software
WordPress
Arch Linux
Fedora
wordpress (Debian package)
wordpress
Arch Linux
Fedora
wordpress (Debian package)
wordpress
How to mitigate CVE-2020-28036
Install updates from vendor's website.
WordPress - update to 5.5.2
wordpress (Debian package) - update to 5.0.11+dfsg1-0+deb10u1
wordpress - addressed in versions 5.1.8-1.el6, 5.1.8-1.el7, 5.5.3-1.fc31, 5.5.3-1.fc32, 5.5.3-1.fc33
wordpress (Debian package) - update to 5.0.11+dfsg1-0+deb10u1
wordpress - addressed in versions 5.1.8-1.el6, 5.1.8-1.el7, 5.5.3-1.fc31, 5.5.3-1.fc32, 5.5.3-1.fc33