CVE-2018-16470
Quick assessment
Affected
Rack Rack
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.
Rack是软件开发者Christian Neukirchen所研发的一个Ruby Web服务器接口，它为Web服务器、Web框架和中间件的API进行了统一，并支持使用单一的方法调用。multipart parser是其中的一个用于处理multipart/form-data请求的解析器。 Rack 2.0.6之前版本中的multipart parser存在拒绝服务漏洞。攻击者可通过发送特制的请求利用该漏洞消耗大量CPU资源。
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1090 · Proxy T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2018-16470
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
There is a possible DoS vulnerability in the multipart parser in Rack before 2.0.6. Specially crafted requests can cause the multipart parser to enter a pathological state, causing the parser to use CPU resources disproportionate to the request size.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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
Rack multipart parser 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rack是软件开发者Christian Neukirchen所研发的一个Ruby Web服务器接口，它为Web服务器、Web框架和中间件的API进行了统一，并支持使用单一的方法调用。multipart parser是其中的一个用于处理multipart/form-data请求的解析器。 Rack 2.0.6之前版本中的multipart parser存在拒绝服务漏洞。攻击者可通过发送特制的请求利用该漏洞消耗大量CPU资源。
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-2018-16470
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Vendor Advisories for CVE-2018-16470 (1)
Other References for CVE-2018-16470 (1)
IV. Related Vulnerabilities
Same product: Rack
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CVE-2026-26962
Rack: Header injection in multipart requests -
CVE-2026-34835
Rack: `Rack::Request` accepts invalid Host characters, enabl -
CVE-2026-34827
Rack: Algorithmic-Complexity DoS in Rack::Multipart::Parser -
CVE-2026-32762
Rack: Forwarded Header semicolon injection enables Host and -
CVE-2026-34830
Rack: Rack::Sendfile regex injection via HTTP_X_ACCEL_MAPPIN
Same vendor: Rack
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CVE-2026-39324
Rack::Session::Cookie secrets: decrypt failure fallback enab -
CVE-2026-26962
Rack: Header injection in multipart requests -
CVE-2026-34835
Rack: `Rack::Request` accepts invalid Host characters, enabl -
CVE-2026-34827
Rack: Algorithmic-Complexity DoS in Rack::Multipart::Parser -
CVE-2026-32762
Rack: Forwarded Header semicolon injection enables Host and
Same weakness: CWE-400
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CVE-2026-93679
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Uncontrolled Resource Consumption in Elasticsearch Leading t -
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Gitea Actions memory exhaustion through large static matrice -
CVE-2026-105854
Payload: ReDoS in Multipart Content-Type Validation
V. Comments for CVE-2018-16470
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