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2 vulnerabilities found for zebra-consensus by ZcashFoundation

CVE-2026-40880 (GCVE-0-2026-40880)
Vulnerability from cvelistv5
Published
2026-04-21 19:18
Modified
2026-04-21 19:52
Severity ?
7.2 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H
CWE
  • CWE-1025 - Comparison Using Wrong Factors
Summary
ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and zebra-consensus version 5.0.2, a logic error in Zebra's transaction verification cache could allow a malicious miner to induce a consensus split. By carefully submitting a transaction that is valid for height H+1 but invalid for H+2 and then mining that transaction in a block at height H+2, 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 vulnerability is fixed in zebrad version 4.3.1 and zebra-consensus version 5.0.2.
References
Impacted products
Vendor Product Version
ZcashFoundation zebrad Version: < 4.3.1
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Show details on NVD website

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CVE-2026-34377 (GCVE-0-2026-34377)
Vulnerability from cvelistv5
Published
2026-03-31 14:05
Modified
2026-03-31 17:18
Severity ?
8.4 (High) - 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
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
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 accepted but could result in a consensus split between vulnerable Zebra nodes and invulnerable Zebra and Zcashd nodes. This issue has been patched in zebrad version 4.3.0 and zebra-consensus version 5.0.1.
References
Impacted products
Vendor Product Version
ZcashFoundation zebra Version: < 4.3.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

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