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CVE-2026-55782

Published Jul 10, 2026 CWE-400

Overview

CVE-2026-55782 is a known-severity vulnerability. It was published on July 10, 2026.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/M2Team/NanaZip/commit/1ce90f2d14a984476d0407a835273705607facf2 GitHub github.com/M2Team/NanaZip/commit/56aee89037947410dd5e66f3a087e0f290484bae GitHub github.com/M2Team/NanaZip/commit/92b12a6e1eb0cf8e88fcc277aa7508ca1ff27db6 GitHub github.com/M2Team/NanaZip/releases/tag/6.5.1749.0 GitHub github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m GitHub github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m

Frequently Asked Questions

What is CVE-2026-55782?

CVE-2026-55782 is a known-severity vulnerability. It was published on July 10, 2026.

How severe is CVE-2026-55782?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-55782?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55782?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-55782 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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