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CVE-2026-27710 Details

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.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wf	CISA-ADP	ExploitVendor Advisory
https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wf	[email protected]	ExploitVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-191	Integer Underflow (Wrap or Wraparound)	[email protected]

Affected Products

Product	Versions
m2team nanazip	>= 5.0.1252.0, < 6.0.1638.0
CPE cpe:2.3:a:m2team:nanazip:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Feb 27, 2026	Initial Analysis	[email protected]
Feb 26, 2026	CVE Modified	CISA-ADP
Feb 26, 2026	New CVE Received	[email protected]