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CVE-2026-42445

NanaZip: Uncontrolled recursion in NanaZip UFS directory traversal causes stack exhaustion

MEDIUM
5.5
CVSS Score
Published: May 12, 2026 at 07:22 PM UTC
Updated: October 26, 2026 at 06:10 PM UTC
1 product affected across 1 vendorNanaZip

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

NanaZip· M2TEAM
95%
5.0.1252.0 ≤ v < 6.0.1698.0
Affected range stops below 6.0.1698.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/M2Team/NanaZip/security/advisories/GHSA-jpf5-j78p-cp3x

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-674

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