CVE-2026-40880
Description
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
zebra-consensuscrates.io | < 5.0.2 | 5.0.2 |
zebradcrates.io | < 4.3.1 | 4.3.1 |
Affected products
2Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/ZcashFoundation/zebra/security/advisories/GHSA-xvj8-ph7x-65gfnvdVendor AdvisoryWEB
- github.com/advisories/GHSA-xvj8-ph7x-65gfghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-40880ghsaADVISORY
News mentions
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