Bug 2446882 (CVE-2026-31988)

Summary:	CVE-2026-31988 yauzl: yauzl: Denial of Service vulnerability in zip file processing
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aazores, abarbaro, alizardo, anujha, asoldano, bbaranow, bdettelb, bmaxwell, bstansbe, caswilli, cdrage, cmah, dbosanac, dlofthou, doconnor, dschmidt, eaguilar, ebaron, erezende, gmalinko, istudens, ivassile, iweiss, janstey, jchui, jhe, jkoehler, jlanda, jolong, jreimann, kaycoth, kshier, ktsao, lchilton, lphiri, manissin, mdessi, mosmerov, mrizzi, msvehla, nboldt, nwallace, oaljalju, pberan, pcattana, pdelbell, pesilva, pjindal, pmackay, psrna, rhel-process-autobot, rstancel, rstepani, rushinde, sdawley, sfeifer, simaishi, smaestri, smcdonal, stcannon, teagle, thjenkin, vdosoudi, watson-tool-maintainers, yguenane
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in yauzl (Yet Another Unzip Library), a component used in Node.js applications for handling zip files. A remote attacker can exploit an error in how the library processes specific timestamp information within a crafted zip file. This can lead to a denial of service (DoS), causing affected applications to crash and become unavailable.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2459116, 2459117, 2459118, 2459119, 2459120
Bug Blocks:

Description OSIDB Bzimport 2026-03-12 00:01:39 UTC

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.