NanaZip is an open source file archive Starting in version 5.0.1252.0 and prior to version 6.0.1630.0, NanaZip has an out-of-bounds heap read in `.NET Single File` bundle header parser due to missing bounds check. Opening a crafted file with NanaZip causes a crash or leaks heap data to the user. Version 6.0.1630.0 patches the issue.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00014.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
M2Team NanaZip affected
Version Status Constraints
>= 5.0.1252.0, < 6.0.1630.0 affected —

No data.

No data.

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Vendors Products
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Nanazip Subscribe

Project Subscriptions

Vendors Products
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Nanazip Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5c cve-icon cve-icon
https://github.com/user-attachments/files/25274143/poc.exe.zip cve-icon cve-icon
History

Fri, 20 Feb 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared M2team
M2team nanazip
Vendors & Products M2team
M2team nanazip

Thu, 19 Feb 2026 21:00:00 +0000

Type Values Removed Values Added
Description NanaZip is an open source file archive Starting in version 5.0.1252.0 and prior to version 6.0.1630.0, NanaZip has an out-of-bounds heap read in `.NET Single File` bundle header parser due to missing bounds check. Opening a crafted file with NanaZip causes a crash or leaks heap data to the user. Version 6.0.1630.0 patches the issue.
Title NanaZip has DotNet Single file OOB Heap Read
Weaknesses CWE-126
References
Metrics cvssV4_0

{'score': 5.2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-19T20:41:49.223Z

Reserved: 2026-02-12T17:10:53.414Z

Link: CVE-2026-26282

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-19T21:18:31.500

Modified: 2026-02-20T13:49:47.623

Link: CVE-2026-26282

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-20T09:54:00Z

Weaknesses