{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-104432", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-02T00:50:26.603Z", "datePublished": "2026-10-02T11:38:11.214Z", "dateUpdated": "2026-10-02T11:38:11.214Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-02T11:38:11.214Z"}, "datePublic": "2026-08-17T00:00:00.000Z", "title": "Zebra before 6.3.0 False Readiness via Discarded One-Hash FindBlocks Response", "descriptions": [{"lang": "en", "value": "Zebra before 6.3.0 contains an improper exceptional condition check in ChainSync::obtain_tips that discards valid one-hash FindBlocks responses, falsely reporting close-to-tip status. Peers returning only the next block hash cause a zero-length sync sample, making the /ready endpoint return 200 OK while the node remains behind the tip."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Check for Unusual or Exceptional Conditions", "cweId": "CWE-754", "type": "CWE"}]}], "affected": [{"vendor": "ZcashFoundation", "product": "zebra", "defaultStatus": "unaffected", "packageURL": "pkg:cargo/Zebrad", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "6.3.0"}, {"version": "6.3.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:zfnd:zebra:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.3.0"}]}]}], "metrics": [{"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:L/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-h8m8-844p-v3m9", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-h8m8-844p-v3m9)"}, {"name": "VulnCheck Advisory: Zebra before 6.3.0 False Readiness via Discarded One-Hash FindBlocks Response", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/zebra-before-6.3.0-false-readiness-via-discarded-one-hash-findblocks-response"}], "credits": [{"lang": "en", "value": "Maakai123", "type": "reporter"}, {"lang": "en", "value": "oxarbitrage", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "6.3.0"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "zebra", "source": "cna", "vendor": "ZcashFoundation"}, "product": "zebra", "vendor": "zcashfoundation"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "zebra", "vendor": "zfnd"}], "created": "2026-10-02T13:00:13.750677+00:00", "updated": "2026-10-02T15:45:18.263208+00:00", "vendors": ["zcashfoundation", "zcashfoundation$PRODUCT$zebra", "zfnd", "zfnd$PRODUCT$zebra"]}