{"id":"UBUNTU-CVE-2026-31988","details":"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 \u003c data.length + 4 instead of cursor + 4 \u003c= 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.","modified":"2026-05-20T16:25:19.795410534Z","published":"2026-03-11T23:16:00Z","upstream":["CVE-2026-31988"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-31988"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-31988"}],"affected":[{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.0-1","binary_name":"node-yauzl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}},{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0-1","2.1.0-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.0-1ubuntu1","binary_name":"node-yauzl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}},{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-1","2.10.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"node-yauzl","binary_version":"2.10.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}},{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-2","2.10.0-3"],"ecosystem_specific":{"binaries":[{"binary_version":"2.10.0-3","binary_name":"node-yauzl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}},{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.10.0-4","binary_name":"node-yauzl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}},{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-4"],"ecosystem_specific":{"binaries":[{"binary_name":"node-yauzl","binary_version":"2.10.0-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}},{"package":{"name":"node-yauzl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-yauzl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-4"],"ecosystem_specific":{"binaries":[{"binary_name":"node-yauzl","binary_version":"2.10.0-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31988.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}