Improper Verification of Cryptographic Signature

Overview @libp2p/gossipsub is an A typescript implementation of gossipsub Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the validateToRawMessage process. An attacker can cause messages to be accepted and propagated as if authored by a vict...

EUVD-2026-81685

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: Insufficient Verification of Data Authenticity

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-2026-49866

libp2p is a JavaScript Implementation of libp2p networking stack. Prior to 16.0.0, @libp2p/gossipsub defaultDecodeRpcLimits set maxIhaveMessageIDs and maxIwantMessageIDs to Infinity, allowing oversized IHAVE and IWANT control message arrays in message/decodeRpc.ts and gossipsub.ts to synchronousl...

CVE-2026-49866: Allocation of Resources Without Limits or Throttling

libp2p is a JavaScript Implementation of libp2p networking stack. Prior to 16.0.0, @libp2p/gossipsub defaultDecodeRpcLimits set maxIhaveMessageIDs and maxIwantMessageIDs to Infinity, allowing oversized IHAVE and IWANT control message arrays in message/decodeRpc.ts and gossipsub.ts to synchronousl...

CVE-2026-46679: Improper Input Validation

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...

Missing Release of Memory after Effective Lifetime

Overview @libp2p/gossipsub is an A typescript implementation of gossipsub Affected versions of this package are vulnerable to Missing Release of Memory after Effective Lifetime through unbounded growth of the topics data structure when processing subscription requests. An attacker can exhaust...

@bitsocial/ai-moderation-challenge (>=0.1.0, <=0.1.1), @bitsocial/bitsocial-cli (>=0.19.44, <=0.19.72) +6 more potentially affected by CVE-2026-46679 via @libp2p/gossipsub (>=15.0.0-049bfa0fa, <=15.0.22-5692f3f16)

@libp2p/gossipsub NPM version =15.0.0-049bfa0fa, =0.1.0, =0.19.44, =0.1.0, =0.1.0, =0.1.0, =6.0.0-049bfa0fa, =9.0.0-049bfa0fa, =0.0.17, =0.0.47 Source cves: CVE-2026-46679 Source advisory: SNYK:JS-LIBP2PGOSSIPSUB-16798774...

@bitsocial/ai-moderation-challenge (>=0.1.0, <=0.1.1), @bitsocial/bitsocial-cli (>=0.19.44, <=0.19.72) +6 more potentially affected by CVE-2026-46679 via @libp2p/gossipsub (>=15.0.0-049bfa0fa, <=15.0.22-5692f3f16)

@libp2p/gossipsub NPM version =15.0.0-049bfa0fa, =0.1.0, =0.19.44, =0.1.0, =0.1.0, =0.1.0, =6.0.0-049bfa0fa, =9.0.0-049bfa0fa, =0.0.17, =0.0.47 Source cves: CVE-2026-46679 Source advisory: OSV:GHSA-4F8R-922H-2VGV...

blake-streams (0.1.0), fuel-p2p (>=0.4.0, <=0.5.0) +9 more potentially affected by CVE-2026-34219 via libp2p-gossipsub (>=0.28.0, <=0.35.0)

libp2p-gossipsub CARGO version =0.28.0, =0.4.0, =0.20.0, =0.36.0, =0.16.0, =0.1.0, =0.1.1, =0.2.0, =0.39.1, =0.39.3 Source cves: CVE-2026-34219 Source advisory: OSV:GHSA-XQMP-FXGV-XVQ5...

blake-streams (0.1.0), fuel-p2p (>=0.4.0, <=0.5.0) +9 more potentially affected by CVE-2026-33040 via libp2p-gossipsub (>=0.28.0, <=0.35.0)

libp2p-gossipsub CARGO version =0.28.0, =0.4.0, =0.20.0, =0.36.0, =0.16.0, =0.1.0, =0.1.1, =0.2.0, =0.39.1, =0.39.3 Source cves: CVE-2026-33040 Source advisory: OSV:GHSA-GC42-3JG7-RXR2...