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CVE-2026-31988

CVE-2026-31988 · yauzl 3.2.0 - Denial of Service via Off-by-One Error in NTFS Timestamp Parser

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.9 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • yauzl

    Versions
    • ≥ 3.2.0, < 3.2.1: Affected (semver)
    • 3.2.1: Not affected

    Update to 3.2.1

  • yauzl npm

    Versions
    • 3.2.0
    Affected ranges
    • SEMVER: ≥ 3.2.0, < 3.2.1

    Update to 3.2.1

  • node-yauzl Ubuntu:16.04:LTS

    Versions
    • 2.1.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:18.04:LTS

    Versions
    • 2.1.0-1
    • 2.1.0-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:20.04:LTS

    Versions
    • 2.10.0-1
    • 2.10.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:22.04:LTS

    Versions
    • 2.10.0-2
    • 2.10.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:24.04:LTS

    Versions
    • 2.10.0-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:25.10

    Versions
    • 2.10.0-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:26.10

    Versions
    • 2.10.0-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-yauzl Ubuntu:26.04:LTS

    Versions
    • 2.10.0-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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