{"id":"GHSA-q7qp-rjg7-q26m","revision":"273dcf611fe447c3b8a04df43534d882","records":[{"revision":"273dcf611fe447c3b8a04df43534d882","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-q7qp-rjg7-q26m","aliases":["CVE-2026-113872"],"title":"multer vulnerable to Denial of Service via a pending asynchronous fileFilter after request teardown","description":"### Impact\n\nWhen `multer` is configured with an asynchronous `fileFilter`, a single request can crash the Node.js process. If a request is aborted (for example when one file is rejected) while another file's async `fileFilter` is still pending, the pending callback later resumes a parsing stream that multer has already torn down. busboy then emits an error on a stream that no longer has an error listener, which Node raises as an unhandled `'error'` event, and the process exits. A single unauthenticated request is enough, so any application using `multer` with an asynchronous `fileFilter` is affected, regardless of storage engine. Uploads using a synchronous `fileFilter` are not affected.\n\n### Patches\n\nUsers should upgrade to `multer` `2.5.0` or later.\n\n### Workarounds\n\nUse a synchronous `fileFilter`.","state":0,"publishedAt":"2026-10-23T22:08:22+00:00","modifiedAt":"2026-10-23T22:15:04.2850564+00:00","affected":[{"ecosystem":"npm","name":"multer","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"2.0.0"},{"kind":"fixed","version":"2.5.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/expressjs/multer/security/advisories/GHSA-q7qp-rjg7-q26m","https://nvd.nist.gov/vuln/detail/CVE-2026-113872","https://github.com/expressjs/multer/commit/80a2d9df1dfd63b5fab631b8b9966164ed647adf","https://cna.openjsf.org/security-advisories.html","https://github.com/expressjs/multer","https://github.com/expressjs/multer/releases/tag/v2.5.0"],"sourceUrl":"https://github.com/advisories/GHSA-q7qp-rjg7-q26m","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-q7qp-rjg7-q26m","identifiers":["GHSA-q7qp-rjg7-q26m","CVE-2026-113872"]},"retained":false,"historicalAffected":[]}],"coverage":[]}