AIKIDO-2026-10348
unhead is vulnerable to Cross-Site Scripting
75
High Risk
This Affects:
unheadTL;DR
Affected versions of this package are affected by a cross-site scripting (XSS) vulnerability in the useHeadSafe() functionality. The implementation allows arbitrary data-* attribute names to pass validation without properly sanitizing the attribute key. Because attribute keys are later interpolated directly into server-side rendered HTML, an attacker can inject spaces into the attribute name to break out of the intended attribute and introduce additional HTML attributes such as event handlers. When a Nuxt application renders these tags in the <head>, malicious attributes (e.g., onload) may execute in the victim’s browser. This could allow an attacker to inject and execute arbitrary JavaScript when user-controlled metadata is processed using useHeadSafe().
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
unhead is vulnerable to Cross-Site Scripting in versions 0.0.1 - 2.1.10.
How to fix this
Upgrade the unhead library to the patch version.
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