Improper Following of Specification by Caller Affecting zebra-script package, versions <5.0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUST-ZEBRASCRIPT-16301607
- published27 Apr 2026
- disclosed18 Apr 2026
- creditsangsoo-osec
Introduced: 18 Apr 2026
CVE-2026-41583 (opens in a new tab)How to fix?
Upgrade zebra-script to version 5.0.1 or higher.
Overview
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.