{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89146", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-11T01:23:29.845Z", "datePublished": "2026-09-11T10:46:56.275Z", "dateUpdated": "2026-09-11T10:46:56.275Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-11T10:46:56.275Z"}, "datePublic": "2026-09-09T00:00:00.000Z", "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-190", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-617", "description": "CWE-617: Reachable Assertion", "type": "CWE"}]}], "affected": [{"defaultStatus": "unaffected", "vendor": "libp2p", "product": "libp2p-rendezvous", "packageName": "libp2p-rendezvous", "packageURL": "pkg:cargo/libp2p-rendezvous", "collectionURL": "https://crates.io", "repo": "https://github.com/libp2p/rust-libp2p", "versions": [{"version": "0", "lessThanOrEqual": "0.17.1", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [], "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"}}], "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"]}, {"name": "VulnCheck Advisory: libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/libp2p-rendezvous-through-0.17.1-denial-of-service-via-unbounded-registration-ttl-in-discovery-responses"}], "credits": [{"lang": "en", "value": "Ali Firas", "type": "reporter"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "vulncheck-endgame"}}}}

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