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CVE-2026-55782

LOW
2.4
CVSS 4.0
Description
NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's WebAssembly archive handler in NanaZip.Codecs.Archive.WebAssembly.cpp allocates buffers from attacker-controlled 32-bit section and custom-name length fields without validating them against the data present in the file. A tiny crafted module can force multi-gigabyte allocations during listing or extraction through NameSize, Information.Size, and std::string or vector allocation paths, causing memory exhaustion or process termination. This issue is fixed in version 6.5.1749.0.

Metadata

CVE ID
CVE-2026-55782
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-17 14:40 UTC
Published
2026-07-10 16:46 UTC
Last updated
2026-07-10 16:46 UTC
Primary CWE
CWE-400
CWE-400: Uncontrolled Resource Consumption
Vendor / Product
M2Team / NanaZip
Sources
cve.org  ·  NVD

Severity & Metrics

2.4 LOW CVSS 4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products (1)
VendorProductPlatformVersions
M2Team NanaZip — < 6.5.1749.0
Weakness (CWE)
CWESourceDescription
CWE-400 cna CWE-400: Uncontrolled Resource Consumption
CWE-789 cna CWE-789: Memory Allocation with Excessive Size Value
CVSS scores (1)
ScoreSeverityVersionSourceVector
2.4 LOW 4.0 cna CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References (5)
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