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Vulnerabilities

Security incident · CVE-2025-47935

Multer is a node.js middleware for handling .

Published May 19, 2025 · catalog updated May 27, 2025 · Multer is a node.js

Check this week

CVE-2025-47935 is not in CISA KEV. FIRST estimates a 80.00% chance of exploitation in the next 30 days. Check whether you run Multer is a node.js.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Multer is a node.js).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
80.00%
Remediation
Version ranges on file
Affected products
vendor expressjs multer < 2.0.0

Multer is a node.js middleware for handling . 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 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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor expressjs multer < 2.0.0< 2.0.0

How to fix CVE-2025-47935

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-47935 is not in CISA KEV. FIRST estimates a 80.00% chance of exploitation in the next 30 days. Check whether you run Multer is a node.js.

Which versions are affected?

Compare what you have installed with expressjs multer < 2.0.0 < 2.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 80.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 19, 2025 · EUVD

    Detected

    Multer is a node.js middleware for handling . 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 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

  2. May 27, 2025 · EUVD

    Updated

    Multer is a node.js middleware for handling . 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 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

Sources

  • CVE.orgVulnerability recordCVE-2025-47935

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-15797

    Multer is a node.js middleware for handling . 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 stream is not closed, violating Node.js stream safety gui

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog May 27, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.