Medium 5.2Published Feb 19, 2026

CVE-2026-26282NanaZip has DotNet Single file OOB Heap Read

Updated under an hour ago (Oct 26, 2026, 7:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for M2Team NanaZip

Exploited in the last 30 days

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.

CVSS: 5.2 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-126
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

M2Team NanaZip m2team:nanazip (from the name)	from 5.0.1252.0, < 6.0.1630.0	CNA record
m2team nanazip m2team:nanazip	from 5.0.1252.0 before 6.0.1630.0	NVD

References

References

https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5c	x-refsource-confirm, exploit, third-party-advisory
https://github.com/user-attachments/files/25274143/poc.exe.zip	x-refsource-misc, exploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.