high7.5
CVE-2025-47944
Multer vulnerable to Denial of Service from maliciously crafted requests
Impact
### Impact A vulnerability in Multer versions >=1.4.4-lts.1 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process. ### Patches Users should upgrade to `2.0.0` ### Workarounds None ### References - https://github.com/expressjs/multer/issues/1176 - https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | multer | >= 1.4.4-lts.1, < 2.0.0 | 2.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665
- https://github.com/expressjs/multer/issues/1176
- https://github.com/expressjs/multer/security/advisories/GHSA-4pg4-qvpc-4q3h
- https://github.com/advisories/GHSA-4pg4-qvpc-4q3h
- https://nvd.nist.gov/vuln/detail/CVE-2025-47944