CVE-2025-3434: SMTP for Amazon SES – YaySMTP <= 1.8 - Unauthenticated Stored Cross-Site Scripting via Email Logs

7.2 CVSS

Description

The SMTP for Amazon SES – YaySMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Email Logs in all versions up to, and including, 1.8 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.

Classification

CVE ID: CVE-2025-3434

CVSS Base Severity: HIGH

CVSS Base Score: 7.2

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Vendor: yaycommerce

Product: SMTP for Amazon SES – YaySMTP

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.12% (probability of being exploited)

EPSS Percentile: 32.92% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3434
https://www.wordfence.com/threat-intel/vulnerabilities/id/78ac91af-4d71-43f4-b9fc-cf5e6874e7de?source=cve
https://wordpress.org/plugins/smtp-amazon-ses/
https://plugins.trac.wordpress.org/browser/smtp-amazon-ses/trunk/includes/Functions.php
https://plugins.trac.wordpress.org/browser/smtp-amazon-ses/trunk/includes/Helper/Utils.php
https://plugins.trac.wordpress.org/changeset/3270161/

Timeline