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Medium severity5.3NVD Advisory· Published Mar 11, 2026· Updated Apr 15, 2026

CVE-2026-31988

CVE-2026-31988

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
yauzlnpm
>= 3.2.0, < 3.2.13.2.1

Affected products

74

Patches

Vulnerability mechanics

References

6

News mentions

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