{"cve":"CVE-2026-88932","nvd":{"published":"2026-09-14T09:17:01.630","modified":"2026-09-16T19:40:00.317","status":"Awaiting Analysis","description":"multer is a Node.js middleware for handling multipart/form-data uploads. In versions 2.2.0 through 2.3.0, when a request using disk storage is aborted mid-upload, file writes that complete after multer has already run its abort cleanup are not removed, so each aborted upload can leave an orphaned file on disk. A remote unauthenticated attacker can repeatedly start and abort uploads to accumulate orphaned files and exhaust disk space, causing a denial of service. The issue is fixed in multer 2.4.0, and users should upgrade to 2.4.0 or later.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-400","CWE-459"],"references":["https://cna.openjsf.org/security-advisories.html","https://github.com/expressjs/multer/security/advisories/GHSA-3pph-fpjx-jg34"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-88932","score":0.00532,"percentile":0.4497,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3pph-fpjx-jg34","url":"https://osv.dev/vulnerability/GHSA-3pph-fpjx-jg34","summary":"multer vulnerable to Denial of Service via orphaned disk writes on aborted uploads","modified":"2026-09-28T21:45:03.869491412Z","packages":[{"ecosystem":"npm","name":"multer","purl":"pkg:npm/multer","ranges":[">=2.2.0 <2.4.0"],"fixed":["2.4.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}