Multer vulnerable to Denial of Service via memory leaks from unclosed streams

CAO 7.5CVE-2025-47935 · GHSA-44fp-w29j-9vj5 · Công bố 19/05/2025 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2025-47935 là lỗ hổng mức CAO (CVSS 7.5) ảnh hưởng multer.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.80%, cao hơn 56.5% các lỗ hổng khác.
Cách xử lý: cập nhật lên 2.0.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
multer npm	`< 2.0.0`	`2.0.0`

Mô tả

Impact

Multer <2.0.0 is vulnerable to a resource exhaustion and memory leak issue due to improper stream handling. When the HTTP request stream emits an error, the internal busboy stream is not closed, violating Node.js stream safety guidance.

This leads to unclosed streams accumulating over time, consuming memory and file descriptors. Under sustained or repeated failure conditions, this can result in denial of service, requiring manual server restarts to recover. All users of Multer handling file uploads are potentially impacted.

Patches

Users should upgrade to 2.0.0

Workarounds

None

References

Mô tả của NVD

Multer is a node.js middleware for handling `multipart/form-data`. Versions prior to 2.0.0 are vulnerable to a resource exhaustion and memory leak issue due to improper stream handling. When the HTTP request stream emits an error, the internal `busboy` stream is not closed, violating Node.js stream safety guidance. This leads to unclosed streams accumulating over time, consuming memory and file descriptors. Under sustained or repeated failure conditions, this can result in denial of service, requiring manual server restarts to recover. All users of Multer handling file uploads are potentially impacted. Users should upgrade to 2.0.0 to receive a patch. No known workarounds are available.