{"id":"CVE-2025-48997","aliases":["GHSA-g5hg-p3ph-g8qg"],"url":"https://o3.security/vulnerability/CVE-2025-48997","summary":"Multer vulnerable to Denial of Service via unhandled exception","details":"Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to `2.0.1` to receive a patch. No known workarounds are available.","published":"2025-06-03T18:21:59.527Z","modified":"2026-08-12T03:51:09.738770750Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"multer","fixedVersion":"2.0.1"}],"fix":{"url":"https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9","label":"expressjs/multer@35a3272"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48997.json"},{"type":"ADVISORY","url":"https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-48997"},{"type":"REPORT","url":"https://github.com/expressjs/multer/issues/1233"},{"type":"FIX","url":"https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9"},{"type":"FIX","url":"https://github.com/expressjs/multer/pull/1256"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:09.738770750Z"}}