{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55782","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T14:40:28.379Z","datePublished":"2026-07-10T16:46:38.842Z","dateUpdated":"2026-07-14T02:00:57.604Z"},"containers":{"cna":{"title":"NanaZip: Unbounded memory allocation (DoS) in NanaZip WebAssembly parser via attacker-controlled section/name length fields","problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-789","lang":"en","description":"CWE-789: Memory Allocation with Excessive Size Value","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2.4,"baseSeverity":"LOW","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m"},{"name":"https://github.com/M2Team/NanaZip/commit/1ce90f2d14a984476d0407a835273705607facf2","tags":["x_refsource_MISC"],"url":"https://github.com/M2Team/NanaZip/commit/1ce90f2d14a984476d0407a835273705607facf2"},{"name":"https://github.com/M2Team/NanaZip/commit/56aee89037947410dd5e66f3a087e0f290484bae","tags":["x_refsource_MISC"],"url":"https://github.com/M2Team/NanaZip/commit/56aee89037947410dd5e66f3a087e0f290484bae"},{"name":"https://github.com/M2Team/NanaZip/commit/92b12a6e1eb0cf8e88fcc277aa7508ca1ff27db6","tags":["x_refsource_MISC"],"url":"https://github.com/M2Team/NanaZip/commit/92b12a6e1eb0cf8e88fcc277aa7508ca1ff27db6"},{"name":"https://github.com/M2Team/NanaZip/releases/tag/6.5.1749.0","tags":["x_refsource_MISC"],"url":"https://github.com/M2Team/NanaZip/releases/tag/6.5.1749.0"}],"affected":[{"vendor":"M2Team","product":"NanaZip","versions":[{"version":"< 6.5.1749.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T16:46:38.842Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-qxhc-2v6p-wm8m","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/M2Team/NanaZip/security/advisories/GHSA-qxhc-2v6p-wm8m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-14T02:00:08.437231Z","id":"CVE-2026-55782","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-14T02:00:57.604Z"}}]}}