{"api_version":"1","generated_at":"2026-05-08T15:53:33+00:00","cve":"CVE-2026-33040","urls":{"html":"https://cve.report/CVE-2026-33040","api":"https://cve.report/api/cve/CVE-2026-33040.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-33040","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-33040"},"summary":{"title":"libp2p-rust: Gossipsub PRUNE.backoff Duration Overflow","description":"libp2p-rust is the official rust language Implementation of the libp2p networking stack. In versions prior to 0.49.3, the Gossipsub implementation accepts attacker-controlled PRUNE backoff values and may perform unchecked time arithmetic when storing backoff state. A specially crafted PRUNE control message with an extremely large backoff (e.g. u64::MAX) can lead to Duration/Instant overflow during backoff update logic, triggering a panic in the networking state machine. 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