CVE-2026-86038

libp2p is a JavaScript implementation of the libp2p networking stack. From 15.0.0 until 16.0.5, @libp2p/gossipsub uses the default StrictSign policy in packages/gossipsub/src/utils/buildRawMessage.ts, where validateToRawMessage verifies a signature with attacker-controlled msg.key but skips bindi...

CVE-2026-86038

CVE-2026-86038 affects the @libp2p/gossipsub package (versions 15.0.0 through 16.0.5) in the JavaScript libp2p networking stack. The vulnerability resides in validateToRawMessage within the default StrictSign policy: when a claimed author is an RSA peer ID that does not inline a public key, the f...