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CVE Vulnerability Details :
CVE-2026-42446
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-12 May, 2026 | 19:19
Updated At-12 May, 2026 | 19:19
Rejected At-
▼CVE Numbering Authority (CNA)
NanaZip: Stack out-of-bounds read in NanaZip ZealFS bitmap parser

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a stack-based out-of-bounds read exists in the ZealFS filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted ZealFS v1 filesystem image. An attacker-controlled BitmapSize field in the file header drives an unbounded loop that reads past the end of a stack-allocated ZEALFS_V1_HEADER structure. This vulnerability is fixed in 6.0.1698.0.

Affected Products
Vendor
M2Team
Product
NanaZip
Versions
Affected
  • >= 5.0.1250.0, < 6.0.1698.0
Problem Types
TypeCWE IDDescription
CWECWE-125CWE-125: Out-of-bounds Read
Type: CWE
CWE ID: CWE-125
Description: CWE-125: Out-of-bounds Read
Metrics
VersionBase scoreBase severityVector
3.14.4MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Version: 3.1
Base score: 4.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/M2Team/NanaZip/security/advisories/GHSA-4c79-hfr4-mqv9
x_refsource_CONFIRM
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-4c79-hfr4-mqv9
Resource:
x_refsource_CONFIRM
Details not found