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CVE-2026-31988

MEDIUM

5.3

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.15.3

SeveridadeMEDIUM

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/11/2026

Ultima modificacao3/12/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (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)

Correlacoes IOC

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