CVE-2025-48997— Multer vulnerable to Denial of Service via unhandled exception
Quick assessment
Affected
expressjs multer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Multer是expressjs开源的一个用于Node.js中间件。 Multer 1.4.4-lts.1至2.0.1之前版本存在安全漏洞，该漏洞源于空字符串字段名的上传文件请求可能导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-48997
Vulnerability Information
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Vulnerability Title
Multer vulnerable to Denial of Service via unhandled exception
Source: CVE Program / CVE List V5
Vulnerability Description
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 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to `2.0.1` to receive a patch. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
Multer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Multer是expressjs开源的一个用于Node.js中间件。 Multer 1.4.4-lts.1至2.0.1之前版本存在安全漏洞，该漏洞源于空字符串字段名的上传文件请求可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-48997
| # | POC Description | Source Link | Shenlong Link |
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AI-Generated POC
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V. Comments for CVE-2025-48997
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