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CVE-2025-13466— body-parser vulnerable to denial of service when url encoding is used

Quick assessment

Affected
body-parser body-parser
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.

body-parser是expressjs开源的一个 Node.js 解析中间件。 body-parser 2.2.0版本存在安全漏洞，该漏洞源于对URL编码体的低效处理，可能导致拒绝服务攻击。

AI Predicted 7.5 Difficulty: Easy EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-13466

Vulnerability Information
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Vulnerability Title
body-parser vulnerable to denial of service when url encoding is used
Source: CVE Program / CVE List V5
Vulnerability Description
body-parser 2.2.0 is vulnerable to denial of service due to inefficient handling of URL-encoded bodies with very large numbers of parameters. An attacker can send payloads containing thousands of parameters within the default 100KB request size limit, causing elevated CPU and memory usage. This can lead to service slowdown or partial outages under sustained malicious traffic. This issue is addressed in version 2.2.1.
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:L/SC:N/SI:N/SA:L/E:P/AU:Y
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
body-parser 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
body-parser是expressjs开源的一个 Node.js 解析中间件。 body-parser 2.2.0版本存在安全漏洞，该漏洞源于对URL编码体的低效处理，可能导致拒绝服务攻击。
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

Vendor Product Affected Versions CPE Subscribe
body-parser body-parser 2.2.0 -

II. Public POCs for CVE-2025-13466

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III. Intelligence Information for CVE-2025-13466

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IV. Related Vulnerabilities

Same product: body-parser
Same vendor: body-parser
Same weakness: CWE-400

V. Comments for CVE-2025-13466

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