CVE-2026-34377
Description
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.
How to fix
- zfnd zebra4.3.0 or later
- zfnd zebra-consensus5.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zfnd zebra | v < 4.3.0 | 4.3.0 |
| zfnd zebra-consensus | v < 5.0.1 | 5.0.1 |
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Attack Surface Management
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