CVE-2026-40880

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.

The following products are affected by CVE-2026-40880 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40880.

URL	Resource
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-xvj8-ph7x-65gf