CVE-2026-46679 libp2p: Memory DoS via subscription flood of unique topics

libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 15.0.23, three cooperating omissions in @libp2p/gossipsub allow an unauthenticated single peer to exhaust the Node.js heap of any gossipsub node with default options. This issue has been patched in version 15.0.23...

CVE-2026-46679

creationtimestamp| type| source ---|---|--- 2026-05-16 03:00:35+00:00| published-proof-of-concept| https://github.com/libp2p/js-libp2p/security/advisories/GHSA-4f8r-922h-2vgv 2026-06-11 03:00:28+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mnyabxorjg2g 2026-06-11...