CVE-2026-86039 (GCVE-0-2026-86039)
Vulnerability from cvelistv5
Published
2026-09-17 15:19
Modified
2026-09-21 20:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
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 ID derived by RecordEnvelope.openAndCertify. The expectedPeer option checks only the envelope signer, and the gossipsub Peer Exchange path can provide the attacker's own peer ID as expectedPeer. An attacker can therefore sign a record with the attacker's key, place a victim peer ID and attacker-controlled multiaddrs in the payload, and have certified addresses stored for the victim. The poisoned addresses can cause address-book corruption, dial redirection or failure, routing manipulation, and reachability disruption, although the connection upgrade still verifies remote peer identity and prevents a complete identity takeover. The issue is fixed in version 12.0.24.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-86039",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-21T20:48:30.538605Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-21T20:48:54.323Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-vrf4-mx87-p53w"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "js-libp2p",
"vendor": "libp2p",
"versions": [
{
"status": "affected",
"version": "\u003e= 8.0.0, \u003c 12.0.24"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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 ID derived by RecordEnvelope.openAndCertify. The expectedPeer option checks only the envelope signer, and the gossipsub Peer Exchange path can provide the attacker\u0027s own peer ID as expectedPeer. An attacker can therefore sign a record with the attacker\u0027s key, place a victim peer ID and attacker-controlled multiaddrs in the payload, and have certified addresses stored for the victim. The poisoned addresses can cause address-book corruption, dial redirection or failure, routing manipulation, and reachability disruption, although the connection upgrade still verifies remote peer identity and prevents a complete identity takeover. The issue is fixed in version 12.0.24."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-290",
"description": "CWE-290: Authentication Bypass by Spoofing",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-345",
"description": "CWE-345: Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T15:19:00.697Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-vrf4-mx87-p53w",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-vrf4-mx87-p53w"
},
{
"name": "https://github.com/libp2p/js-libp2p/pull/3570",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libp2p/js-libp2p/pull/3570"
},
{
"name": "https://github.com/libp2p/js-libp2p/commit/3bf5d395cbca1488eea6e87cd771e4613b661c30",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libp2p/js-libp2p/commit/3bf5d395cbca1488eea6e87cd771e4613b661c30"
},
{
"name": "https://github.com/libp2p/js-libp2p/releases/tag/peer-store-v12.0.24",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/libp2p/js-libp2p/releases/tag/peer-store-v12.0.24"
}
],
"source": {
"advisory": "GHSA-vrf4-mx87-p53w",
"discovery": "UNKNOWN"
},
"title": "libp2p: PeerStore accepts attacker-signed PeerRecords for a victim peer ID and stores certified attacker addresses"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-86039",
"datePublished": "2026-09-17T15:19:00.697Z",
"dateReserved": "2026-09-04T19:29:21.058Z",
"dateUpdated": "2026-09-21T20:48:54.323Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-86039\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-21T20:48:30.538605Z\"}}}], \"references\": [{\"url\": \"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-vrf4-mx87-p53w\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-21T20:48:48.685Z\"}}], \"cna\": {\"title\": \"libp2p: PeerStore accepts attacker-signed PeerRecords for a victim peer ID and stores certified attacker addresses\", \"source\": {\"advisory\": \"GHSA-vrf4-mx87-p53w\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"libp2p\", \"product\": \"js-libp2p\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 8.0.0, \u003c 12.0.24\"}]}], \"references\": [{\"url\": \"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-vrf4-mx87-p53w\", \"name\": \"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-vrf4-mx87-p53w\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/libp2p/js-libp2p/pull/3570\", \"name\": \"https://github.com/libp2p/js-libp2p/pull/3570\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/libp2p/js-libp2p/commit/3bf5d395cbca1488eea6e87cd771e4613b661c30\", \"name\": \"https://github.com/libp2p/js-libp2p/commit/3bf5d395cbca1488eea6e87cd771e4613b661c30\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/libp2p/js-libp2p/releases/tag/peer-store-v12.0.24\", \"name\": \"https://github.com/libp2p/js-libp2p/releases/tag/peer-store-v12.0.24\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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 ID derived by RecordEnvelope.openAndCertify. The expectedPeer option checks only the envelope signer, and the gossipsub Peer Exchange path can provide the attacker\u0027s own peer ID as expectedPeer. An attacker can therefore sign a record with the attacker\u0027s key, place a victim peer ID and attacker-controlled multiaddrs in the payload, and have certified addresses stored for the victim. The poisoned addresses can cause address-book corruption, dial redirection or failure, routing manipulation, and reachability disruption, although the connection upgrade still verifies remote peer identity and prevents a complete identity takeover. The issue is fixed in version 12.0.24.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-290\", \"description\": \"CWE-290: Authentication Bypass by Spoofing\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-345\", \"description\": \"CWE-345: Insufficient Verification of Data Authenticity\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-09-17T15:19:00.697Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-86039\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-21T20:48:54.323Z\", \"dateReserved\": \"2026-09-04T19:29:21.058Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-09-17T15:19:00.697Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…