CVE-2026-27014

NanZip has ROMFS Archive Infinite Loop / Stack Overflow

State: Published
Severity: 5.1 Medium
Published: Feb 19, 2026
Updated: Feb 20, 2026
Reserved: Feb 17, 2026

Description

NanaZip is an open source file archive Starting in version 5.0.1252.0 and prior to version 6.0.1630.0, circular `NextOffset` chains cause an infinite loop, and deeply nested directories cause unbounded recursion (stack overflow) in the ROMFS archive parser. Version 6.0.1630.0 patches the issue.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-674 Uncontrolled Recursion

Affected Products

Product	Versions
NanaZipM2Team	>= 5.0.1252.0, < 6.0.1630.0Affected

References

https://github.com/M2Team/NanaZip/security/advisories/GHSA-fc89-3f57-h9q5

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