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{"cveTags": [], "descriptions": [{"lang": "en", "value": "yauzl (aka Yet Another Unzip Library) version 3.2.0 for Node.js contains an off-by-one error in the NTFS extended timestamp extra field parser within the getLastModDate() function. The while loop condition checks cursor < data.length + 4 instead of cursor + 4 <= data.length, allowing readUInt16LE() to read past the buffer boundary. A remote attacker can cause a denial of service (process crash via ERR_OUT_OF_RANGE exception) by sending a crafted zip file with a malformed NTFS extra field. This affects any Node.js application that processes zip file uploads and calls entry.getLastModDate() on parsed entries. Fixed in version 3.2.1."}, {"lang": "es", "value": "yauzl (tambi\u00e9n conocida como Yet Another Unzip Library) versi\u00f3n 3.2.0 para Node.js contiene un error de off-by-one en el analizador del campo extra de marca de tiempo extendida NTFS dentro de la funci\u00f3n getLastModDate(). La condici\u00f3n del bucle 'while' comprueba cursor &lt; data.length + 4 en lugar de cursor + 4 &lt;= data.length, permitiendo que readUInt16LE() lea m\u00e1s all\u00e1 del l\u00edmite del b\u00fafer. Un atacante remoto puede causar una denegaci\u00f3n de servicio (ca\u00edda del proceso a trav\u00e9s de una excepci\u00f3n ERR_OUT_OF_RANGE) al enviar un archivo zip manipulado con un campo extra NTFS malformado. Esto afecta a cualquier aplicaci\u00f3n Node.js que procesa cargas de archivos zip y llama a entry.getLastModDate() en las entradas analizadas. Corregido en la versi\u00f3n 3.2.1."}], "id": "CVE-2026-31988", "lastModified": "2026-03-12T21:07:53.427", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-03-11T23:16:00.530", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/thejoshwolfe/yauzl/commit/c4695215b05c6adffda613b9051a2a85429b33fe"}, {"source": "disclosure@vulncheck.com", "url": "https://www.codeant.ai/security-research/yauzl-denial-of-service-zip-file-crash"}, {"source": "disclosure@vulncheck.com", "url": "https://www.npmjs.com/package/yauzl"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/yauzl-denial-of-service-via-off-by-one-error-in-ntfs-timestamp-parser"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://www.codeant.ai/security-research/yauzl-denial-of-service-zip-file-crash"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-193"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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