Vulnerability · Published Feb 19, 2026 · Assigned by GitHub_M

CVE-2026-27114NanaZip has ROMFS Archive Infinite Loop

Medium 5.1

In plain English

A medium-severity infinite loop in NanaZip from M2Team. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.3%top 76.1% 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 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-835 · 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-hfg9-6rf9-5pgx x_refsource_CONFIRM
https://github.com/user-attachments/files/25274528/poc.zip x_refsource_MISC