#2439 - Fix PDF files not rendering when embedded - #2439
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The default-src 'self' directive blocked the browser's built-in PDF viewer from loading internal resources (like blob: URLs), resulting in an empty iframe when rendering PDF attachments. This commit introduces a permissive CSP (omitting default-src) specifically for PDF responses, while maintaining the strict CSP for all other file types.
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Akshayrs46
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The default-src 'self' directive blocked the browser's built-in PDF viewer from loading internal resources (like blob: URLs), resulting in an empty iframe when rendering PDF attachments. This commit introduces a permissive CSP (omitting default-src) specifically for PDF responses, while maintaining the strict CSP for all other file types.