{"id":"CVE-2026-61544","state":"PUBLISHED","title":"libp2p-quic: Remote panic via certificate expiry race during QUIC handshake","description":"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 the certificate expired. In the Quinn post-handshake upgrade path, transports/quic/src/connection/connecting.rs called libp2p_tls::certificate::parse a second time in remote_peer_id and used expect on the result. The repeated wall-clock validity check could reject the now-expired certificate, causing the expect call to terminate any application exposing an affected libp2p-quic listener. This vulnerability is fixed in 0.13.1.","publishedAt":"2026-09-15T19:46:13.721Z","updatedAt":"2026-09-17T16:48:19.068Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["libp2p rust-libp2p"],"affected":[{"vendor":"libp2p","product":"rust-libp2p","versions":[{"version":"< 0.13.1","status":"affected"}]}],"references":["https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-5hq8-qhww-jm7q","https://github.com/libp2p/rust-libp2p/pull/6525","https://github.com/libp2p/rust-libp2p/commit/212f3774af048e2cecfb2e6b1e08477685e52b22","https://github.com/libp2p/rust-libp2p/commit/e8f35e12c2418b04df6e9cdf036005e8aee3c7a2"],"weaknesses":["CWE-248"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/61xxx/CVE-2026-61544.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-61544","state":"PUBLISHED","datePublished":"2026-09-15T19:46:13.721Z","dateUpdated":"2026-09-17T16:48:19.068Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-10T16:27:03.093Z"},"containers":{"cna":{"title":"libp2p-quic: Remote panic via certificate expiry race during QUIC handshake","descriptions":[{"lang":"en","value":"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 the certificate expired. In the Quinn post-handshake upgrade path, transports/quic/src/connection/connecting.rs called libp2p_tls::certificate::parse a second time in remote_peer_id and used expect on the result. The repeated wall-clock validity check could reject the now-expired certificate, causing the expect call to terminate any application exposing an affected libp2p-quic listener. This vulnerability is fixed in 0.13.1."}],"affected":[{"vendor":"libp2p","product":"rust-libp2p","versions":[{"version":"< 0.13.1","status":"affected"}]}],"references":[{"url":"https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-5hq8-qhww-jm7q","name":"https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-5hq8-qhww-jm7q","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/libp2p/rust-libp2p/pull/6525","name":"https://github.com/libp2p/rust-libp2p/pull/6525","tags":["x_refsource_MISC"]},{"url":"https://github.com/libp2p/rust-libp2p/commit/212f3774af048e2cecfb2e6b1e08477685e52b22","name":"https://github.com/libp2p/rust-libp2p/commit/212f3774af048e2cecfb2e6b1e08477685e52b22","tags":["x_refsource_MISC"]},{"url":"https://github.com/libp2p/rust-libp2p/commit/e8f35e12c2418b04df6e9cdf036005e8aee3c7a2","name":"https://github.com/libp2p/rust-libp2p/commit/e8f35e12c2418b04df6e9cdf036005e8aee3c7a2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-248","lang":"en","description":"CWE-248: Uncaught Exception","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-15T19:46:13.721Z"},"source":{"advisory":"GHSA-5hq8-qhww-jm7q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-5hq8-qhww-jm7q","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T16:47:52.414433Z","id":"CVE-2026-61544","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":"2026-09-17T16:48:19.068Z"}}]}}}