CVE-2026-42445: CWE-674: Uncontrolled Recursion in M2Team NanaZip
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, an uncontrolled recursion vulnerability exists in the UFS/UFS2 filesystem image parser in NanaZip. The function GetAllPaths recurses into subdirectories without any depth limit or visited-inode tracking. A crafted UFS image with a deep directory tree or an inode cycle causes stack exhaustion, crashing the NanaZip process. This vulnerability is fixed in 6.0.1698.0.
AI Analysis
Technical Summary
CVE-2026-42445 describes an uncontrolled recursion vulnerability in NanaZip's UFS/UFS2 filesystem image parser in versions from 5.0.1252.0 to before 6.0.1698.0. The GetAllPaths function recursively traverses subdirectories without limiting recursion depth or tracking visited inodes, which can lead to stack exhaustion when processing specially crafted UFS images containing deep directory trees or inode cycles. This results in a crash of the NanaZip process, causing a denial of service. The vulnerability is resolved in NanaZip version 6.0.1698.0.
Potential Impact
Successful exploitation causes a denial-of-service condition by crashing the NanaZip process due to stack exhaustion. There is no impact on confidentiality or integrity. The attack requires local access and user interaction to open a crafted UFS image file.
Mitigation Recommendations
Upgrade NanaZip to version 6.0.1698.0 or later, where this vulnerability is fixed. Until then, avoid opening untrusted or specially crafted UFS/UFS2 filesystem images to prevent potential crashes. Patch status is confirmed fixed in 6.0.1698.0.
CVE-2026-42445: CWE-674: Uncontrolled Recursion in M2Team NanaZip
Description
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, an uncontrolled recursion vulnerability exists in the UFS/UFS2 filesystem image parser in NanaZip. The function GetAllPaths recurses into subdirectories without any depth limit or visited-inode tracking. A crafted UFS image with a deep directory tree or an inode cycle causes stack exhaustion, crashing the NanaZip process. This vulnerability is fixed in 6.0.1698.0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42445 describes an uncontrolled recursion vulnerability in NanaZip's UFS/UFS2 filesystem image parser in versions from 5.0.1252.0 to before 6.0.1698.0. The GetAllPaths function recursively traverses subdirectories without limiting recursion depth or tracking visited inodes, which can lead to stack exhaustion when processing specially crafted UFS images containing deep directory trees or inode cycles. This results in a crash of the NanaZip process, causing a denial of service. The vulnerability is resolved in NanaZip version 6.0.1698.0.
Potential Impact
Successful exploitation causes a denial-of-service condition by crashing the NanaZip process due to stack exhaustion. There is no impact on confidentiality or integrity. The attack requires local access and user interaction to open a crafted UFS image file.
Mitigation Recommendations
Upgrade NanaZip to version 6.0.1698.0 or later, where this vulnerability is fixed. Until then, avoid opening untrusted or specially crafted UFS/UFS2 filesystem images to prevent potential crashes. Patch status is confirmed fixed in 6.0.1698.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-27T13:55:58.692Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a03813ccbff5d861012f66d
Added to database: 5/12/2026, 7:36:28 PM
Last enriched: 5/12/2026, 8:07:38 PM
Last updated: 5/13/2026, 4:58:40 AM
Views: 2
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