CVEvulnerability
CVE-2026-55782
2.4 LOW
Official page ↗
- Status
- Deferred
- Published
- 2026-07-10
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 2.4 LOW — 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/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
- Weaknesses
- CWE-400, CWE-789
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.
Related
References
- https://github.com/M2Team/NanaZip/commit/1ce90f2d14a984476d0407a835273705607facf2 github.com
- https://github.com/M2Team/NanaZip/commit/56aee89037947410dd5e66f3a087e0f290484bae github.com
- https://github.com/M2Team/NanaZip/commit/92b12a6e1eb0cf8e88fcc277aa7508ca1ff27db6 github.com
- https://github.com/M2Team/NanaZip/releases/tag/6.5.1749.0 github.com
- https://github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m github.com
- https://github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m github.com