{"schema":"threatline.record/2","record":{"id":"CVE-2026-104419","aliases":["GHSA-qhr3-cvch-5fh2"],"summary":"Zebra before 6.3.0 Honest Peer Banning via Far-Ahead FindBlocks Hashes","details":"Zebra (zebrad) 4.5.0 before 6.3.0 discards which peer supplied the block hashes in FindBlocks responses, then assigns 100 misbehavior points, the ban threshold, to whichever peer serves a requested block more than 50,000 heights above the tip. A remote peer can return real far-ahead hashes to a syncing node so that honest peers get banned, eroding its peer set and raising eclipse risk.","categories":["Unclassified"],"product":"zebra","vendor":"ZcashFoundation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104419","source_modified_at":"2026-10-05T15:05:08.363Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"zebra","vendor":"ZcashFoundation","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"6.3.0"},{"version":"6.3.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104419","source_modified_at":"2026-10-05T15:05:08.363Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zebra","ecosystem":null},"version":"6.3.0","basis":"first unaffected version stated in the CVE record"}],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00126,"percentile":0.02104,"score_date":"2026-10-23"},"published_at":"2026-10-02T11:38:01.103Z","modified_at":"2026-10-05T15:05:08.363Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104419","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-05T15:05:08.363Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104419","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/ZcashFoundation/zebra/security/advisories/GHSA-qhr3-cvch-5fh2","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/zebra-before-6.3.0-honest-peer-banning-via-far-ahead-findblocks-hashes","tags":["third-party-advisory"]}],"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":"2026-10-05T15:04:56.762886Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-05T15:05:08.363Z","content_hash":"feaed98e7cf1105a8017b0d837a6050cfc8a96d3811dbcf9c0f84d49d3683570"}}