What’s Vulnerable › Vulnerabilities

CVE-2024-13908: SMTP by BestWebSoft <= 1.1.9 - Authenticated (Administrator+) Arbitrary File Upload

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-08 · updated 2026-06-17
• Weakness: CWE-434

Description

The SMTP by BestWebSoft plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'save_options' function in all versions up to, and including, 1.1.9. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Affected products

• BestWebSoft SMTP: before 1.2.0 — fixed in 1.2.0

How to fix

Upgrade to a fixed version: BestWebSoft SMTP 1.2.0. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/bws-smtp/tags/1.1.8/includes/class-bwssmtp-settings.php
• https://plugins.trac.wordpress.org/changeset/3250935/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9f3b0637-b1ee-4e0b-95cd-11ac377805a7?source=cve

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