CVE-2026-86039

CVE-2026-86039 affects @libp2p/peer-store (part of the JavaScript libp2p networking stack) from versions 8.0.0 through 12.0.24 . The root cause is in consumePeerRecord, which verifies a RecordEnvelope signature but fails to require that PeerRecord.peerId in the signed payload matches the signer p...

@abaxxlabs/agents (>=0.12.5, <=0.42.1), @agent-p2p/cli (>=0.0.1, <=0.0.7) +352 more potentially affected by CVE-2026-86039 via @libp2p/peer-store (>=8.2.1-05abd49f, <=12.0.24-e86b39e5d)

@libp2p/peer-store NPM version =8.2.1-05abd49f, =0.12.5, =0.0.1, =0.0.1, =1.0.0, =0.2.1, =0.3.1, =0.2.1, =0.4.1, =1.3.0, =0.0.2, =1.1.3, =0.2.0, =0.2.5 - @axonsdk/cli 0.1.6 and more Source cves: CVE-2026-86039 Source advisory: MEND:CVE-2026-86039...

EUVD-2026-81686

libp2p is a JavaScript implementation of the libp2p networking stack. From 8.0.0 until 12.0.24, @libp2p/peer-store in packages/peer-store/src/index.ts uses consumePeerRecord to verify a RecordEnvelope signature but does not require PeerRecord.peerId in the signed payload to equal the signer peer ...

CVE-2026-86039 libp2p: PeerStore accepts attacker-signed PeerRecords for a victim peer ID and stores certified attacker addresses

libp2p is a JavaScript implementation of the libp2p networking stack. From 8.0.0 until 12.0.24, @libp2p/peer-store in packages/peer-store/src/index.ts uses consumePeerRecord to verify a RecordEnvelope signature but does not require PeerRecord.peerId in the signed payload to equal the signer peer ...

CVE-2026-86039 libp2p: PeerStore accepts attacker-signed PeerRecords for a victim peer ID and stores certified attacker addresses

libp2p is a JavaScript implementation of the libp2p networking stack. From 8.0.0 until 12.0.24, @libp2p/peer-store in packages/peer-store/src/index.ts uses consumePeerRecord to verify a RecordEnvelope signature but does not require PeerRecord.peerId in the signed payload to equal the signer peer ...

CVE-2026-86038 libp2p: Gossipsub StrictSign accepts attacker-signed messages as a victim RSA peer ID

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...

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...

@b0ase/path402-api (4.0.0-alpha.1), @b0ase/path402-core (4.0.0-alpha.2) +28 more potentially affected by CVE-2026-86038 via @libp2p/gossipsub (>=15.0.1-425a42cdd, <=16.0.5-e86b39e5d)

@libp2p/gossipsub NPM version =15.0.1-425a42cdd, =0.1.0, =2.0.1, =2.0.0, =6.0.1-425a42cdd, =9.0.0, =0.1.0, =10.0.0-rc.8, =0.0.1-dev.1773506972.23bf9c0, =10.0.24 and more Source cves: CVE-2026-86038 Source advisory: MEND:CVE-2026-86038...

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...

PT-2026-94370

Name of the Vulnerable Software and Affected Versions @libp2p/peer-store versions 8.0.0 through 12.0.23 Description In the @libp2p/peer-store component, the consumePeerRecord function verifies a RecordEnvelope signature but fails to ensure that the PeerRecord.peerId within the signed payload...

CVE-2026-86040: Uncontrolled Resource Consumption

libp2p is a JavaScript implementation of the libp2p networking stack. Prior to 11.0.26, @libp2p/floodsub accepts unauthenticated RPC frames on /floodsub/1.0.0 through PeerStreams.attachInboundStream in packages/floodsub/src/peer-streams.ts without protobuf element limits, then processRpc and...

CVE-2026-86039: Authentication Bypass by Spoofing

libp2p is a JavaScript implementation of the libp2p networking stack. From 8.0.0 until 12.0.24, @libp2p/peer-store in packages/peer-store/src/index.ts uses consumePeerRecord to verify a RecordEnvelope signature but does not require PeerRecord.peerId in the signed payload to equal the signer peer ...

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...

PT-2026-94369

Name of the Vulnerable Software and Affected Versions @libp2p/gossipsub versions 15.0.0 through 16.0.4 Description In the default StrictSign policy, the validateToRawMessage function in packages/gossipsub/src/utils/buildRawMessage.ts fails to bind the supplied public key in msg.key to the claimed...

Linux Distros Unpatched Vulnerability : CVE-2026-61544

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.13.1, libp2p-quic could panic during an inbound QUIC handsha...

PT-2026-94371

Name of the Vulnerable Software and Affected Versions libp2p versions prior to 11.0.26 Description @libp2p/floodsub accepts unauthenticated RPC frames on the '/floodsub/1.0.0' endpoint through PeerStreams.attachInboundStream without protobuf element limits. Subsequently, processRpc and...

CVE-2026-61544

creationtimestamp| type| source ---|---|--- 2026-09-15 22:35:07+00:00| published-proof-of-concept| https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-5hq8-qhww-jm7q 2026-09-16 07:35:07+00:00| seen| https://gist.github.com/alon710/013ea36d9ece4cb8727c52246b863fd0...

CVE-2026-61544

libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.13.1, libp2p-quic could panic during an inbound QUIC handshake when a remote peer presented a valid short-lived libp2p TLS certificate and delayed the final TLS 1.3 handshake fragment until after t...

UBUNTU-CVE-2026-61544

libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.13.1, libp2p-quic could panic during an inbound QUIC handshake when a remote peer presented a valid short-lived libp2p TLS certificate and delayed the final TLS 1.3 handshake fragment until after t...

CVE-2026-61544

libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.13.1, libp2p-quic could panic during an inbound QUIC handshake when a remote peer presented a valid short-lived libp2p TLS certificate and delayed the final TLS 1.3 handshake fragment until after t...