🛡️ CVE-2026-34377
🟠 CVSS 8.1 — High ⚠️ Exploit Public CWE-347 NVD
8.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE CWE-347
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-31
Updated 2026-06-15
Modified 2026-04-06
Fix URL N/A

Affected Packages

Software From version Fixed in
zebra — 4.3.0
zebra-consensus — —
zebrad — —

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