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CVE-2026-34377

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-consensus version 5.0.1, a logic error in Zebra's transaction verification cache could allow a malicious miner to induce a consensus split. By matching a valid transaction's txid while providing invalid authorization data, a miner could cause vulnerable Zebra nodes to accept an invalid block, leading to a consensus split from the rest of the Zcash network. This would not allow invalid transactions to be accep
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7242cba9332296ba3dbf66c39283475265fc5ee077fa472393d47793c291c7c9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"zebra","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 4.3.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/affected/0

{"product":"zebra-consensus","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 5.0.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"product":"zebra","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 4.3.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/affected/0
{"product":"zebra-consensus","vendor":"ZcashFoundation","versions":[{"status":"affected","version":"< 5.0.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.4,"baseSeverity":"HIGH","privilegesRequired":"HIGH","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-347","description":"CWE-347: Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0","tags":["x_refsource_MISC"],"url":"https://github.com/ZcashFoundation/zebra/releases/tag/v4.3.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/references/1
{"name":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-3vmh-33xr-9cqh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-3vmh-33xr-9cqh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/references/0
{"name":"https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-performance-improvements","tags":["x_refsource_MISC"],"url":"https://zfnd.org/zebra-4-3-0-critical-security-fixes-zip-235-support-and-performance-improvements"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:702a9ef52fa036064740818079c785bb4006cd0b4b8477562a9e7f14cd0277ea · sha256:48f4ae1acb53be74… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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