What is CVE-2025-47935?

CVE-2025-47935 is a high-severity vulnerability in Expressjs Multer, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2025-05-19.

How severe is CVE-2025-47935?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Expressjs Multer

CVE-2025-47935

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 inte…

EPSS: 0.007 (46.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Expressjs Multer — versions < 2.0.0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

https://github.com/expressjs/multer/security/advisories/GHSA-44fp-w29j-9vj5 (x_refsource_CONFIRM)
https://github.com/expressjs/multer/pull/1120 (x_refsource_MISC)
https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-47935?: CVE-2025-47935 is a high-severity vulnerability in Expressjs Multer, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2025-05-19.
How severe is CVE-2025-47935?: High severity. CVSS v3 base score is 7.5 out of 10.