Deserialization of Untrusted Data in Easy WP SMTP - CVE-2019-25141
Published: March 25, 2019 / Updated: September 20, 2026
Vulnerability identifier: #VU18078
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-25141
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable website.
The vulnerability exists due to insecure input validation when processing serialized data passed via the "swpsmtp_import_settings" HTTP POST parameter to /easy-wp-smtp.php script. A remote unauthenticated attacker can import arbitrary wp_options and reconfigure WordPress to allow user registration with administrative privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable website.
Note: this vulnerability is being actively exploited in the wild.
Affected software
Easy WP SMTP
How to mitigate CVE-2019-25141
Install updates from vendor's website.
Easy WP SMTP - update to 1.3.9.1