Replay Attack Affecting mppx package, versions <0.4.8
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Test your applications- Snyk IDSNYK-JS-MPPX-15857153
- published31 Mar 2026
- disclosed29 Mar 2026
- creditsamczsun, Veria Labs
Introduced: 29 Mar 2026
New CVE NOT AVAILABLE CWE-288 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade mppx to version 0.4.8 or higher.
Overview
mppx is a 
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Affected versions of this package are vulnerable to Replay Attack through the tempo/charge and tempo/session. An attacker can gain unauthorized access or perform unauthorized actions by replaying transaction hashes, bypassing signature verification, manipulating fee payers, exploiting channel reopen logic, and abusing method-mismatch fallbacks.