Dependencies & Supply Chain
high Severity
Free Check

Known Vulnerable JavaScript Libraries

Scans loaded frontend scripts (jQuery, Lodash, Moment, Bootstrap) against Retire.js vulnerability databases.

Test Your Website for Known Vulnerable JavaScript Libraries

Run this check along with 90+ automated tests across your domain.

Why It Matters

Using vulnerable library versions allows attackers to exploit prototype pollution, regex denial of service, or DOM XSS.

How We Check This

We detect library versions using script hash signatures and regex patterns, then match against the National Vulnerability Database (NVD).

How to Fix & Implement

Copy-paste configuration blocks tailored for your web server or edge proxy.

nginx snippet
npm update # Upgrade frontend packages to latest patched versions

Frequently Asked Questions

How do outdated libraries introduce XSS?

Older versions of jQuery or Lodash had flaws where unsanitized HTML passed into helper functions executed arbitrary scripts.