Known vulnerabilities in Header Footer Script Adder

Easily insert custom HTML, CSS, and JavaScript into your WordPress site's header, body, and footer without modifying theme files.

2Reported vulnerabilities

6.4Highest CVSS score

2.1.1Latest version

1,000+Active installs

What to do now

Update Header Footer Script Adder to 2.1.1 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: July 17, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2026-15394	Medium 6.4	0.3%	0 to 2.1 (inclusive)	`2.1.1`	July 23, 2026
CVE-2025-12109	Medium 6.4	0.2%	2.0.5 and earlier	`2.0.6`	December 12, 2025

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.