Stored cross-site scripting in WordPress - CVE-2019-9787
Published: March 13, 2019 / Updated: March 17, 2019
Vulnerability identifier: #VU17981
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2019-9787
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 passed as comments. A remote 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 (Debian package)
How to mitigate CVE-2019-9787
Install updates from vendor's website.
WordPress - addressed in versions 3.9.27, 4.0.26, 4.1.26, 4.2.23, 4.3.19, 4.4.18, 4.5.17, 4.6.14, 4.7.13, 4.8.9, 4.9.10, 5.0.5, 5.1.1
wordpress (Debian package) - addressed in versions 4.7.5+dfsg-2+deb9u6, 5.0.4+dfsg1-1+deb10u2, 5.4.1+dfsg1-1
wordpress (Debian package) - addressed in versions 4.7.5+dfsg-2+deb9u6, 5.0.4+dfsg1-1+deb10u2, 5.4.1+dfsg1-1