What’s Vulnerable › Vulnerabilities
CVE-2026-42355: NanaZip: Uncontrolled recursion in NanaZip Electron ASAR parser causes stack exhaustion
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-12 · updated 2026-10-26
- Weakness: CWE-674
Description
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, an uncontrolled recursion vulnerability exists in the Electron Archive (ASAR) parser in NanaZip. When opening a crafted .asar file with deeply nested JSON in the header, both nlohmann::json::parse and the handler's GetAllPaths function recurse without depth limits, exhausting the thread stack and crashing the NanaZip process. This vulnerability is fixed in 6.0.1698.0.
Affected products
- M2Team NanaZip: from 5.0.1250.0 before 6.0.1698.0 — fixed in 6.0.1698.0
How to fix
Upgrade to a fixed version: M2Team NanaZip 6.0.1698.0. Check the vendor advisory for mitigations.
References
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