What’s Vulnerable › Vulnerabilities

CVE-2024-13898: Simple Banner <= 3.0.4 - Authenticated (Administrator+) Stored Cross-Site Scripting

• Severity: medium (CVSS 4.4 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: 2025-04-04 · updated 2026-06-17
• Weakness: CWE-79

Description

The Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, 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

• Simple Banner: through 3.0.4

References

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3264130%40simple-banner%2Ftrunk&old=3210193%40simple-banner%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/6a2dea28-14cf-4e83-ac72-efc7c97ecf54?source=cve

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