Open redirect in WordPress - CVE-2019-16220
Published: September 5, 2019 / Updated: September 12, 2019
Vulnerability identifier: #VU20883
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-16220
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data in the "wp_validate_redirect" in "wp-includes/pluggable.php". A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
Affected software
WordPress
wordpress (Debian package)
wordpress (Debian package)
How to mitigate CVE-2019-16220
Install updates from vendor's website.
WordPress - update to 5.2.3
wordpress (Debian package) - addressed in versions 4.7.5+dfsg-2+deb9u6, 5.0.4+dfsg1-1+deb10u1, 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+deb10u1, 5.0.4+dfsg1-1+deb10u2, 5.4.1+dfsg1-1