Cross-site scripting in WordPress - CVE-2020-11030
Published: April 29, 2020 / Updated: May 4, 2020
Vulnerability identifier: #VU27441
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-2020-11030
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the search block. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and 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
wordpress (Debian package)
wordpress
Fedora
wordpress (Debian package)
wordpress
Fedora
How to mitigate CVE-2020-11030
Install updates from vendor's website.
WordPress - addressed in versions 3.7.33, 3.8.33, 3.9.31, 4.0.30, 4.1.30, 4.2.27, 4.3.23, 4.4.22, 4.5.21, 4.6.18, 4.7.17, 4.8.13, 4.9.14, 5.0.9, 5.1.5, 5.2.6, 5.3.3, 5.4.1
wordpress (Debian package) - addressed in versions 4.7.5+dfsg-2+deb9u6, 5.0.4+dfsg1-1+deb10u2, 5.4.1+dfsg1-1
wordpress - addressed in versions 5.1.5-1.el6, 5.1.5-1.el7
wordpress (Debian package) - addressed in versions 4.7.5+dfsg-2+deb9u6, 5.0.4+dfsg1-1+deb10u2, 5.4.1+dfsg1-1
wordpress - addressed in versions 5.1.5-1.el6, 5.1.5-1.el7
External References
- https://wordpress.org/news/2020/04/wordpress-5-4-1/
- https://wpvulndb.com/vulnerabilities/10204/
- https://core.trac.wordpress.org/changeset/47636/
- https://www.wordfence.com/blog/2020/04/unpacking-the-7-vulnerabilities-fixed-in-todays-wordpress-5-4-1-security-update/
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-vccm-6gmc-qhjh