CVE-2024-13679: Widget BUY.BOX <= 3.1.5 - Authenticated (Contributor+) Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-19 · updated 2026-06-17
Weakness: CWE-79

Description

The Widget BUY.BOX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'buybox-widget' shortcode in all versions up to, and including, 3.1.5 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

simply4net Widget BUY.BOX: through 3.1.5

References

https://plugins.trac.wordpress.org/browser/buybox-widget/trunk/functions/Widget/Embed.php#L43
https://www.wordfence.com/threat-intel/vulnerabilities/id/fba6abba-fe29-4a94-bf20-3db78737c275?source=cve

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