{"id":"CVE-2026-3520","details":"Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.","aliases":["GHSA-5528-5vmv-3xc2"],"modified":"2026-03-15T22:52:35.402318Z","published":"2026-03-04T17:16:22.610Z","related":["CGA-432f-7mj6-gpqf"],"references":[{"type":"ADVISORY","url":"https://cna.openjsf.org/security-advisories.html"},{"type":"ADVISORY","url":"https://github.com/expressjs/multer/security/advisories/GHSA-5528-5vmv-3xc2"},{"type":"ADVISORY","url":"https://www.cve.org/CVERecord?id=CVE-2026-3520"},{"type":"FIX","url":"https://github.com/expressjs/multer/commit/7e66481f8b2e6c54b982b34c152479e096ce2752"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/expressjs/multer","events":[{"introduced":"0"},{"fixed":"368c8a10cca11854cf17c24029fefd1eafb1c059"},{"fixed":"7e66481f8b2e6c54b982b34c152479e096ce2752"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2.1.1"}]}}],"versions":["v1.0.0","v1.0.1","v1.0.2","v1.0.3","v1.0.4","v1.0.5","v1.0.6","v1.1.0","v1.2.0","v1.2.1","v1.3.0","v1.3.1","v1.4.0","v1.4.1","v1.4.2","v1.4.3","v1.4.4","v1.4.4-lts.1","v1.4.5-lts.1","v1.4.5-lts.2","v2.0.0","v2.0.1","v2.0.2","v2.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3520.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:H"}]}