What’s Vulnerable › Vulnerabilities

CVE-2026-15394: Header Footer Script Adder <= 2.1 - Authenticated (Author+) Stored Cross-Site Scripting via 'asm_code' Snippet Meta

• Severity: medium (CVSS 6.4 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: 2026-07-23 · updated 2026-07-23
• Weakness: CWE-79

Description

The Header Footer Script Adder – Insert Code in Header, Body & Footer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'asm_code' Snippet Meta in all versions up to, and including, 2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• mahethekiller Header Footer Script Adder: through 2.1

References

• https://plugins.trac.wordpress.org/browser/header-and-footer-script-adder/tags/2.1/pro/class-pro-admin.php#L400
• https://plugins.trac.wordpress.org/browser/header-and-footer-script-adder/tags/2.1/pro/class-pro-public.php#L145
• https://plugins.trac.wordpress.org/browser/header-and-footer-script-adder/tags/2.1/pro/class-pro-public.php#L253
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3611085%40header-and-footer-script-adder&new=3611085%40header-and-footer-script-adder
• https://www.wordfence.com/threat-intel/vulnerabilities/id/c394c9bc-21f6-45ea-8eda-8ee22a9b87ba?source=cve

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