CVE-2025-11453: Header and Footer Scripts <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting

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: 2026-01-09 · updated 2026-06-17
Weakness: CWE-79

Description

The Header and Footer Scripts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the _inpost_head_script parameter in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. 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

anand_kumar Header and Footer Scripts: through 2.3.0

References

https://plugins.trac.wordpress.org/browser/header-and-footer-scripts/tags/2.2.2/shfs.php#L119
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3442622%40header-and-footer-scripts&new=3442622%40header-and-footer-scripts&sfp_email=&sfph_mail=
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3444257%40header-and-footer-scripts&new=3444257%40header-and-footer-scripts&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/d658e087-8cc7-4653-af3c-407b6f73fb7b?source=cve

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