What’s Vulnerable › Vulnerabilities

CVE-2024-13866: Simple Notification <= 1.3 - Authenticated (Administrator+) Stored Cross-Site Scripting

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-05 · updated 2026-06-17
• Weakness: CWE-79

Description

The Simple Notification plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected products

• appsbd Simple Notification: through 1.3

References

• https://wordpress.org/plugins/simple-notification/#developers
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e814f798-5ebc-4bea-838f-d0a803f9bdbc?source=cve

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