{"schema":"threatline.record/2","record":{"id":"CVE-2026-95859","aliases":["GHSA-g3g5-x568-qvqx"],"summary":"libp2p-rust: Gossipsub GRAFT topics unbounded growth","details":"libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.49.5, Gossipsub GRAFT control-message handling unconditionally adds attacker-supplied topic hashes to connected_peer.topics without confirming that the peer previously subscribed to those topics. A remote unauthenticated peer that can reach a Gossipsub listener can repeatedly send novel GRAFT topics, causing cumulative per-peer memory growth that is not bounded by subscription filters, peer scoring, or per-message size limits. This can exhaust process memory and cause a denial of service. This issue is fixed in version 0.49.5.","categories":["Unclassified"],"product":"rust-libp2p","vendor":"libp2p","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-95859","source_modified_at":"2026-10-21T02:20:36.706Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"rust-libp2p","vendor":"libp2p","versions":[{"version":"< 0.49.5","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00291,"percentile":0.20605,"score_date":"2026-10-23"},"published_at":"2026-10-16T15:19:04.504Z","modified_at":"2026-10-21T02:20:36.706Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-95859","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T02:20:36.706Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-95859","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-g3g5-x568-qvqx","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/libp2p/rust-libp2p/pull/6608","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/libp2p/rust-libp2p/commit/51ed5f00e1b0620ded3444ecadf18477052148ea","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-21T02:20:19.474819Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-21T02:20:36.706Z","content_hash":"32f7bcb2c24d85eae081d3488afa1266de673641a0e47b967751a727de772b62"}}