CVE-2026-26282
Received Received - Intake
Out-of-Bounds Heap Read in NanaZip .NET Bundle Parser

Publication date: 2026-02-19

Last updated on: 2026-02-20

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2026-02-19
Last Modified
2026-02-20
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-14
NVD
CVE-2026-26282
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
m2team nanazip From 5.0.1252.0 (inc) to 6.0.1630.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
CWE-126 The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
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Executive Summary

This vulnerability exists in NanaZip, an open source file archiver, in versions starting from 5.0.1252.0 up to but not including 6.0.1630.0. It is caused by a missing bounds check in the .NET Single File bundle header parser, which leads to an out-of-bounds heap read.

When a user opens a specially crafted file with a vulnerable version of NanaZip, it can cause the application to crash or leak heap data to the user.

The issue was fixed in version 6.0.1630.0.

Impact Analysis

The vulnerability can impact users by causing NanaZip to crash when opening a maliciously crafted file.

More seriously, it can lead to leakage of heap data, potentially exposing sensitive information stored in memory.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update NanaZip to version 6.0.1630.0 or later, as this version patches the out-of-bounds heap read issue.

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