CVE-2026-42355

EUVD-2026-29786

12.05.2026, 20:16

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	3.3 LOW	LOCAL	LOW	NONE	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Base Score

CVSS 3.x

EPSS Score

Percentile: 1%

Affected Products (NVD)

Vendor	Product	Version
m2team	nanazip	5.0.1250.0 ≤ 𝑥 < 6.0.1698.0

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-674 - Uncontrolled Recursion
The product does not properly control the amount of recursion which takes place, consuming excessive resources, such as allocated memory or the program stack.

References

https://github.com/M2Team/NanaZip/security/advisories/GHSA-4gxf-p4q6-gfrf