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CVE-2026-31988

MEDIUM

5.3

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.15.3

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado3/11/2026

Ultima modificacion3/12/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-193

Referencias

https://github.com/thejoshwolfe/yauzl/commit/c4695215b05c6adffda613b9051a2a85429b33fe(disclosure@vulncheck.com)

https://www.codeant.ai/security-research/yauzl-denial-of-service-zip-file-crash(disclosure@vulncheck.com)

https://www.npmjs.com/package/yauzl(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/yauzl-denial-of-service-via-off-by-one-error-in-ntfs-timestamp-parser(disclosure@vulncheck.com)

https://www.codeant.ai/security-research/yauzl-denial-of-service-zip-file-crash(134c704f-9b21-4f2e-91b3-4a467353bcc0)

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