HackerOne Disclosed Reports - 2026-03-26

Medium
resolved

Assertion error in node_url.cc via malformed URL format leads to Node.js crash

Bug reported by Rafael Gonzaga was disclosed at March 26, 2026, 3:41 pm   |   Reachable Assertion

An assertion error in node_url.cc via malformed URL format leads to a Node.js crash. A flaw in the URL processing caused an assertion failure in the native code when url.format() was called with a malformed internationalized domain name containing invalid characters, crashing the Node.js process. This vulnerability affected Node.js versions 24.x and 25.x.