{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-104428","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-10-02T00:46:23.831Z","datePublished":"2026-10-02T11:38:08.558Z","dateUpdated":"2026-10-06T02:40:55.553Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-02T11:38:08.558Z"},"datePublic":"2026-07-03T00:00:00.000Z","title":"Zebra before 11.0.0 Denial of Service via getblock Verbosity 2","descriptions":[{"lang":"en","value":"The getblock RPC method in zebra-rpc before 11.0.0, used by the Zcash Foundation's Zebra node, panics on verbosity 2 for a side-chain block because the block's -1 confirmations sentinel is converted to u32 with .expect(), aborting the process. Remote unauthenticated attackers, directly or through lightwalletd, can repeat this call to keep the node in a crash loop."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Reachable Assertion","cweId":"CWE-617","type":"CWE"}]}],"affected":[{"vendor":"ZcashFoundation","product":"zebra","defaultStatus":"unaffected","packageURL":"pkg:cargo/zebra-rpc","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"11.0.0"},{"version":"11.0.0","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zfnd:zebra:*:*:*:*:*:*:*:*","versionEndExcluding":"11.0.0"}]}]}],"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-x6v8-c2xp-928m","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-x6v8-c2xp-928m)"},{"name":"VulnCheck Advisory: Zebra before 11.0.0 Denial of Service via getblock Verbosity 2","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/zebra-before-11.0.0-denial-of-service-via-getblock-verbosity-2"}],"credits":[{"lang":"en","value":"mpguerra","type":"coordinator"},{"lang":"en","value":"defuse","type":"reporter"},{"lang":"en","value":"oxarbitrage","type":"finder"},{"lang":"en","value":"upbqdn","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T02:40:45.728254Z","id":"CVE-2026-104428","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-06T02:40:55.553Z"}}]}}