{"id":"CVE-2026-31988","summary":"yauzl 3.2.0 - Denial of Service via Off-by-One Error in NTFS Timestamp Parser","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.","aliases":["GHSA-gmq8-994r-jv83"],"modified":"2026-08-12T03:51:39.504372332Z","published":"2026-03-11T22:58:48.863Z","related":["CGA-46f4-r7mm-232v"],"database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-193"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31988.json"},"references":[{"type":"WEB","url":"https://www.npmjs.com/package/yauzl"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31988.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31988"},{"type":"ADVISORY","url":"https://www.codeant.ai/security-research/yauzl-denial-of-service-zip-file-crash"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/yauzl-denial-of-service-via-off-by-one-error-in-ntfs-timestamp-parser"},{"type":"FIX","url":"https://github.com/thejoshwolfe/yauzl/commit/c4695215b05c6adffda613b9051a2a85429b33fe"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/thejoshwolfe/yauzl","events":[{"introduced":"6eb82421a7e0ac74825bfb80ee473b8e0ae64276"},{"fixed":"c4695215b05c6adffda613b9051a2a85429b33fe"}],"database_specific":{"extracted_events":[{"introduced":"3.2.0"},{"fixed":"3.2.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["3.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31988.json"}}],"schema_version":"1.9.0","severity":[{"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"}]}