Stored cross-site scripting in SMTP for Amazon SES – YaySMTP plugin for WordPress

1) Stored cross-site scripting

EUVDB-ID: #VU112231

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-3434

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

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within Email Logs. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SMTP for Amazon SES - YaySMTP: 1.0 - 1.8

CPE2.3

• cpe:2.3:a:yaycommerce:smtp-amazon-ses:1.0:*:*:*:*:wordpress:*:*
• cpe:2.3:a:yaycommerce:smtp-amazon-ses:1.1:*:*:*:*:wordpress:*:*
• cpe:2.3:a:yaycommerce:smtp-amazon-ses:1.2:*:*:*:*:wordpress:*:*

External links

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/
https://wordpress.org/plugins/smtp-amazon-ses/
https://www.wordfence.com/threat-intel/vulnerabilities/id/78ac91af-4d71-43f4-b9fc-cf5e6874e7de?source=cve

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.