CVE-2026-26282

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.6 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
m2teamnanazip
5.0.1252.0 ≤
𝑥
< 6.0.1630.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/M2Team/NanaZip/security/advisories/GHSA-ccpc-2222-xv5c
https://github.com/user-attachments/files/25274143/poc.exe.zip