Improper Following of Specification by Caller Affecting zebrad package, versions <4.3.1
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- published27 Apr 2026
- disclosed18 Apr 2026
- creditsangsoo-osec
Introduced: 18 Apr 2026
NewCVE-2026-41583 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade zebrad to version 4.3.1 or higher.
Overview
zebrad is a The Zcash Foundation's independent, consensus-compatible implementation of a Zcash node
Affected versions of this package are vulnerable to Improper Following of Specification by Caller in the handling of sighash hash types for V4 and V5 transactions. An attacker can cause network partitioning and potential double-spend scenarios by submitting transactions with invalid hash types, leading to consensus divergence between nodes.