Fix path traversal vulnerability in downloader#14
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Add input validation for file name and GUID parameters to prevent directory traversal attacks. The validation ensures: - File names only contain alphanumeric characters, dots, underscores, and hyphens - GUIDs only contain hexadecimal characters - Both parameters are non-empty This prevents malicious inputs from accessing files outside the intended directory structure. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Add input validation for file name and GUID parameters to prevent directory traversal attacks. The validation ensures:
This prevents malicious inputs from accessing files outside the intended directory structure.