CVE-2025-0916: yaysmtp XSS — Fix

Description

The YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 2.4.9 to 2.6.2 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. Note: The vulnerability has been initially patched in version 2.4.8 and was reintroduced in version 2.4.9 with the removal of the wp_kses_post() built-in WordPress sanitization function.

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CVSS v3.1 Score

7.2

HIGH

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
yaycommerce	yaysmtp	2.4.9 — 2.6.3

References

Advisories & Patches

https://plugins.trac.wordpress.org/changeset/3238172

Other References

https://plugins.trac.wordpress.org/browser/yaysmtp/trunk/includes/Functions.php https://plugins.trac.wordpress.org/browser/yaysmtp/trunk/includes/Helper/Utils.php https://wordpress.org/plugins/yaysmtp/#developers https://www.wordfence.com/threat-intel/vulnerabilities/id/209019bd-b214-4389-a972-42e38d501203?source=cve

Frequently Asked Questions

What is CVE-2025-0916? +

The YaySMTP and Email Logs: Amazon SES, SendGrid, Outlook, Mailgun, Brevo, Google and Any SMTP Service plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 2.4.9 to 2.6.2 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. Note: The vulnerability has been initially patched in version 2.4.8 and was reintroduced in version 2.4.9 with the removal of the wp_kses_post() built-in WordPress sanitization function. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2025-0916? +

CVE-2025-0916 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-0916? +

CVE-2025-0916 affects products from yaycommerce, specifically: yaysmtp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-0916? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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