Showing 3 vulnerabilities on this page for zebra-consensus

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Zebra has sync restart poisoning from single unauthenticated peer via above-lookahead block

### Am I affected You are affected if: 1. You run `zebrad` up to and including `v4.4.1`. 2. Your node accepts inbound P2P connections and is syncing or catching up to the chain tip. ### Summary A malicious peer can answer Zebra's outbound `getblocks`/`FindBlocks` request with a small two-hash inventory, then serve a syntactically valid block whose coinbase height is far above the victim's local tip. The `AboveLookaheadHeightLimit` error in the sync download pipeline triggers a global sync re

CWE-345Jul 2, 2026
CVSS-v3.1EPSS-PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks

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

CWE-1025Apr 21, 2026
CVSS7.2v4.0EPSS0.261%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Zebra has a Consensus Failure due to Improper Verification of V5 Transactions

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

CWE-347Mar 31, 2026
CVSS8.4v4.0EPSS0.255%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX