Cross-site scripting in WordPress - CVE-2020-4046
Published: June 12, 2020 / Updated: July 6, 2020
Vulnerability identifier: #VU29004
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2020-4046
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user is able to add JavaScript to posts in the block editor and execute arbitrary script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Affected software
WordPress
Debian Linux
Fedora
wordpress (Debian package)
wordpress
Debian Linux
Fedora
wordpress (Debian package)
wordpress
How to mitigate CVE-2020-4046
Install updates from vendor's website.
WordPress - addressed in versions 3.7.34, 3.8.34, 3.9.32, 4.0.31, 4.1.31, 4.2.28, 4.3.24, 4.4.23, 4.5.22, 4.6.19, 4.7.18, 4.8.14, 4.9.15, 5.0.10, 5.1.6, 5.2.7, 5.3.4, 5.4.2
wordpress (Debian package) - update to 5.0.10+dfsg1-0+deb10u1
wordpress - addressed in versions 5.1.6-1.el6, 5.1.6-1.el7, 5.4.2-1.fc31, 5.4.2-1.fc32
wordpress (Debian package) - update to 5.0.10+dfsg1-0+deb10u1
wordpress - addressed in versions 5.1.6-1.el6, 5.1.6-1.el7, 5.4.2-1.fc31, 5.4.2-1.fc32