CVE-2026-48801

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.1, LinkifyIt.prototype.match, the package's primary public API, has ON² algorithmic complexity for inputs containing many fuzzy links or emails because the JavaScript-level scan loop re-slices input and re-runs...

CVE-2026-48801

Linkify-it (linkify-it) prior to version 5.0.1 has an O(N^2) scan loop in LinkifyIt.prototype.match, making inputs with many fuzzy links or emails vulnerable to resource exhaustion on a request hot path that renders untrusted Markdown with linkify: true. The issue arises from re-slicing input and...

GHSA-22P9-WV53-3RQ4 LinkifyIt#match scan loop has quadratic algorithmic complexity

Summary LinkifyIt.prototype.match — the package's primary public API — has ON² algorithmic complexity for inputs containing many fuzzy links or emails. This is not a regex backtrack bug; it's a structural issue in the JS-level scan loop that re-slices the input and re-runs unanchored regex search...