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

CVSS 4.0 6.9 MEDIUMCVSS 3.1 5.3 MEDIUMEUVD CVSS 4.0 6.9 CVSS 4.0 · [email protected] · Secondary 6.9 MEDIUMCVSS 3.1 · [email protected] · Secondary 5.3 MEDIUMCVSS_V3 CVSS_V4 Publisher rating MODERATEFixed by yauzl 3.2.1KEV status unknown

cve-program · CVE-2026-31988

Published

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.

Read the publisher's advisory

euvd · EUVD-2026-11482

Published

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.

Read the publisher's advisory

nvd · CVE-2026-31988

Published

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.

Read the publisher's advisory

osv · GHSA-gmq8-994r-jv83

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-31988

Published

yauzl

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "thejoshwolfe",
                    "product": "yauzl",
                    "versions": [
                        {
                            "version": "3.2.0",
                            "status": "affected",
                            "lessThan": "3.2.1",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "3.2.1"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/yauzl"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-11482

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Mar 11, 2026, 10:58:48 PM

dateUpdated: Mar 12, 2026, 1:40:55 PM

2 related source bulletins · separate from aliases

WID-SEC-W-2026-1220: IBM App Connect Enterprise: Mehrere Schwachstellen

CVE-2026-26278 · CVE-2026-27601 · CVE-2026-27903 · CVE-2026-27904 · CVE-2026-29786 · CVE-2026-30827 · CVE-2026-31802 · CVE-2026-31988 · CVE-2026-32141 · CVE-2026-33036 · CVE-2026-33228

RHSA-2026:24841: Red Hat Security Advisory: Red Hat Developer Hub 1.10.0 release.

CVE-2026-2950 · CVE-2026-4923 · CVE-2026-22036 · CVE-2026-27601 · CVE-2026-31988 · CVE-2026-32235 · CVE-2026-33349

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-31988

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-193

Original publisher date fields

published: 2026-03-11T23:16:00.530

lastModified: 2026-06-17T10:34:53.130

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-gmq8-994r-jv83

Published

yauzl

npm

SEMVER · introduced 3.2.0 → fixed 3.2.1

1 versions listed as affected

3.2.0

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 12:11 UTC · 256 of 275 readable · 252 fully read · documentation 469/469 current