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Vulnerability Details :

CVE-2026-26282

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-19 Feb, 2026 | 20:41
Updated At-19 Feb, 2026 | 20:41
Rejected At-
Credits

NanaZip has DotNet Single file OOB Heap Read

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:19 Feb, 2026 | 20:41
Updated At:19 Feb, 2026 | 20:41
Rejected At:
▼CVE Numbering Authority (CNA)
NanaZip has DotNet Single file OOB Heap Read

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.

Affected Products
Vendor
M2Team
Product
NanaZip
Versions
Affected
  • >= 5.0.1252.0, < 6.0.1630.0
Problem Types
TypeCWE IDDescription
CWECWE-126CWE-126: Buffer Over-read
Type: CWE
CWE ID: CWE-126
Description: CWE-126: Buffer Over-read
Metrics
VersionBase scoreBase severityVector
4.05.2MEDIUM
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
Version: 4.0
Base score: 5.2
Base severity: MEDIUM
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
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-ccpc-2222-xv5c
x_refsource_CONFIRM
https://github.com/user-attachments/files/25274143/poc.exe.zip
x_refsource_MISC
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5c
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/user-attachments/files/25274143/poc.exe.zip
Resource:
x_refsource_MISC
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:19 Feb, 2026 | 21:18
Updated At:19 Feb, 2026 | 21:18

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.2MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 5.2
Base severity: MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-126Primarysecurity-advisories@github.com
CWE ID: CWE-126
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5csecurity-advisories@github.com
N/A
https://github.com/user-attachments/files/25274143/poc.exe.zipsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5c
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/user-attachments/files/25274143/poc.exe.zip
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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