{"id":"CVE-2026-3304","aliases":["GHSA-xf7r-hgr6-v32p"],"url":"https://o3.security/vulnerability/CVE-2026-3304","summary":"Multer vulnerable to Denial of Service via incomplete cleanup","details":"Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.","published":"2026-02-27T15:44:37.187Z","modified":"2026-07-16T03:48:26.759965017Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"multer","fixedVersion":"2.1.0"}],"fix":{"url":"https://github.com/expressjs/multer/commit/739919097dde3921ec31b930e4b9025036fa74ee","label":"expressjs/multer@7399190"},"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3304.json"},{"type":"WEB","url":"https://www.cve.org/CVERecord?id=CVE-2026-3304"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6174"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6802"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-3304"},{"type":"ADVISORY","url":"https://cna.openjsf.org/security-advisories.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3304.json"},{"type":"ADVISORY","url":"https://github.com/expressjs/multer/security/advisories/GHSA-xf7r-hgr6-v32p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3304"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2443353"},{"type":"FIX","url":"https://github.com/expressjs/multer/commit/739919097dde3921ec31b930e4b9025036fa74ee"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-16T03:48:26.759965017Z"}}