Vulnerability · Published Feb 19, 2026 · Assigned by GitHub_M

CVE-2026-27014NanZip has ROMFS Archive Infinite Loop / Stack Overflow

Medium 5.1

In plain English

A medium-severity security flaw in NanaZip from M2Team. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.2%top 92.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
M2Team	NanaZip	>= 5.0.1252.0, < 6.0.1630.0

Weakness: CWE-674 · Vector: 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

References

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