Medium 5.3Published Mar 11, 2026

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

Updated under an hour ago (Oct 28, 2026, 10:00 AM ET)

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Every CVE for thejoshwolfe yauzl

Exploited in the last 30 days

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: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-193
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Mar 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

thejoshwolfe yauzl thejoshwolfe:yauzl (from the name)	from 3.2.0 before 3.2.1; 3.2.1 not affected	CNA record

References

References

https://github.com/thejoshwolfe/yauzl/commit/c4695215b05c6adffda613b9051a2a85429b33fe	patch
https://www.codeant.ai/security-research/yauzl-denial-of-service-zip-file-crash	third-party-advisory
https://www.npmjs.com/package/yauzl	product
https://www.vulncheck.com/advisories/yauzl-denial-of-service-via-off-by-one-error-in-ntfs-timestamp-parser	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.