CVE-2025-0521: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in saadiqbal Post SMTP – WordPress SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more
The Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the from and subject parameter in all versions up to, and including, 3.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVE-2025-0521: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in saadiqbal Post SMTP – WordPress SMTP Plugin with Email Logs and Mobile App for Failure Notifications – Gmail SMTP, Office 365, Brevo, Mailgun, Amazon SES and more
Description
The Post SMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the from and subject parameter in all versions up to, and including, 3.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-01-16T17:53:46.524Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6b69b7ef31ef0b555307
Added to database: 2/25/2026, 9:36:41 PM
Last updated: 2/26/2026, 8:08:54 AM
Views: 1
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