expressjs multer up to 1.x Upload Request uncaught exception

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in expressjs multer up to 1.x. This affects an unknown function of the component Upload Request Handler. This manipulation causes uncaught exception. This vulnerability is registered as CVE-2025-47944. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in expressjs multer up to 1.x. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Upload Request Handler. The manipulation with an unknown input leads to a uncaught exception vulnerability. The CWE definition for the vulnerability is CWE-248. An exception is thrown from a function, but it is not caught. As an impact it is known to affect availability. The summary by CVE is:

Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.0 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. Users should upgrade to version 2.0.0 to receive a patch. No known workarounds are available.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-47944 since 05/14/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.0.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Uncaught exception
CWE: CWE-248
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: multer 2.0.0

Timelineinfo

05/14/2025 🔍
05/19/2025 +5 days 🔍
05/19/2025 +0 days 🔍
05/19/2025 +0 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-47944 (🔍)
GCVE (CVE): GCVE-0-2025-47944
GCVE (VulDB): GCVE-100-309625

Entryinfo

Created: 05/19/2025 21:34
Changes: 05/19/2025 21:34 (63)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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