CVE-2026-75962 Post SMTP WordPress Plugin - Stored XSS

Post SMTP WordPress plugin <= 4.0.1 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping of 'user_email' parameter, letting unauthenticated attackers inject scripts in email logs, exploit requires WordPress Multisite with public registration enabled.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.28% chance of exploitation in 30 days
View the NVD record ↗