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CVE-2026-40880

7.2 high SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.2 · zfndNVD modified 2026-10-26 21:10

Affected (CPE criteria) 2

  • cpe:2.3:a:zfnd:zebra-consensus:*:*:*:*:*:rust:*:*
  • cpe:2.3:a:zfnd:zebrad:*:*:*:*:*:rust:*:*

References 1