Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the HTTP/2 handling process when nghttp2sessionmemsend is called re-entrantly during the execution of nghttp2sessionmemrecv. An attacker can cause a heap-use-after-free condition by triggering concurrent or re-entrant...

CVE-2026-56848

A flaw in Node.js HTTP/2 handling allows nghttp2sessionmemsend to be called re-entrantly while nghttp2sessionmemrecv is executing, resulting in a heap-use-after-free. This vulnerability affects Node.js 26.x, 24.x, and 22.x...