CVE-2026-27710

MediumCVSS 5.0/10Last modified Jun 17, 2026

Description

NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a denial-of-service vulnerability exists in NanaZip’s `.NET Single File Application` parser. A crafted bundle can force an integer underflow in header-size calculation and trigger an unbounded memory allocation attempt during archive open. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.

Metrics

CVSS 3.1 5.0/10CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-191

Affected software

Vendor	Product	Versions
M2Team	NanaZip	>= 5.0.1252.0, < 6.0.1638.0; >= 6.1, < 6.5.1638.0

References

https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wfExploit, Vendor Advisory
https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wfExploit, Vendor Advisory

Timeline

Published: Feb 26, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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