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CWE-646: Reliance on File Name or Extension of Externally-Supplied File

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The product allows a file to be uploaded, but it relies on the file name or extension of the file to determine the appropriate behaviors.

What the weakness is: CWE-646 at MITRE. OWASP Top 10: A06:2025 Insecure Design

Related attack patterns (CAPEC): 1
  • CAPEC-209 XSS Using MIME Type Mismatch Severity: Medium

The attack patterns MITRE's CAPEC relates to CWE-646, as MITRE names them. Credits.

Ask an AI about CWE-646

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Show the promptExplain CWE-646: Reliance on File Name or Extension of Externally-Supplied File and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/646.html and https://cve.bz/cve/cwe/646?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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