CVE-2026-34377 in Zebrainfo

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.

Disclosure

03/31/2026

Entries

VulDB provides additional information and datapoints for this CVE:

IDVulnerabilityCWEExpCouCVE
354292Zebra V5 Transaction signature verification347Not definedOfficial fixCVE-2026-34377

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