{"id":"CVE-2026-89146","state":"PUBLISHED","title":"libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses","description":"libp2p-rendezvous through 0.17.1 fails to validate registration TTL values in discovery responses, allowing attackers to trigger timer arithmetic overflow. A malicious rendezvous server can send a discovery response with an unbounded TTL value that causes the client node process to panic when computing the expiry timer.","publishedAt":"2026-09-11T10:46:56.275Z","updatedAt":"2026-09-24T14:21:34.176Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["libp2p libp2p-rendezvous"],"affected":[{"vendor":"libp2p","product":"libp2p-rendezvous","packageName":"libp2p-rendezvous","packageURL":"pkg:cargo/libp2p-rendezvous","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.17.1","versionType":"semver"}],"collectionURL":"https://crates.io","repo":"https://github.com/libp2p/rust-libp2p"}],"references":["https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989","https://docs.rs/crate/libp2p-rendezvous/0.17.1/source/src/client.rs","https://github.com/libp2p/rust-libp2p","https://www.vulncheck.com/advisories/libp2p-rendezvous-through-0.17.1-denial-of-service-via-unbounded-registration-ttl-in-discovery-responses"],"weaknesses":["CWE-190","CWE-617"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89146.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89146","state":"PUBLISHED","datePublished":"2026-09-11T10:46:56.275Z","dateUpdated":"2026-09-24T14:21:34.176Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-11T01:23:29.845Z"},"containers":{"cna":{"title":"libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses","descriptions":[{"lang":"en","value":"libp2p-rendezvous through 0.17.1 fails to validate registration TTL values in discovery responses, allowing attackers to trigger timer arithmetic overflow. A malicious rendezvous server can send a discovery response with an unbounded TTL value that causes the client node process to panic when computing the expiry timer."}],"affected":[{"vendor":"libp2p","product":"libp2p-rendezvous","packageName":"libp2p-rendezvous","packageURL":"pkg:cargo/libp2p-rendezvous","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.17.1","versionType":"semver"}],"collectionURL":"https://crates.io","repo":"https://github.com/libp2p/rust-libp2p"}],"references":[{"url":"https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989","name":"libp2p-rendezvous registration lifetime denial of service","tags":["third-party-advisory"]},{"url":"https://docs.rs/crate/libp2p-rendezvous/0.17.1/source/src/client.rs","name":"src/client.rs at libp2p-rendezvous 0.17.1","tags":["technical-description"]},{"url":"https://github.com/libp2p/rust-libp2p","name":"Product","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/libp2p-rendezvous-through-0.17.1-denial-of-service-via-unbounded-registration-ttl-in-discovery-responses","name":"VulnCheck Advisory: libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","version":"3.1","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}},{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190: Integer Overflow or Wraparound","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-617","lang":"en","description":"CWE-617: Reachable Assertion","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-24T14:21:34.176Z"},"datePublic":"2026-09-09T00:00:00.000Z","cpeApplicability":[],"credits":[{"lang":"en","value":"Ali Firas","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://gist.github.com/thesmartshadow/25ef03f7ebbd12118a9d27695c885989","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-11T18:56:08.559551Z","id":"CVE-2026-89146","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-11T18:56:17.169Z"}}]}}}