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security: refuse raster images declaring more than 25 megapixels - #261
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A valid 62KB PNG declaring 4000x4000 allocated 128MB on decode, and page images decode in parallel. decodeRaster now checks the declared size with image.DecodeConfig before decoding. README documents that the library does not guard SSRF; embedders need a dial guard (browserproxy has one). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Security audit findings and one fix.
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