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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-31988

yauzl 3.2.0 - Denial of Service via Off-by-One Error in NTFS Timestamp Parser

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

thejoshwolfe yauzl

Default version status: unaffected

  • 3.2.0 to < 3.2.1affected
  • 3.2.1unaffected
pkg:npm/yauzl

References