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Django Pre-auth Denial of Service: Multipart Base64 CPU Amplification
AI-collected research leads through 3 November 2026, including a November–October–September missed-article review and a targeted multilingual search alongside earlier community-source sweeps. Unranked, incomplete, not community-vetted, and subject to change.
Whitespace in a base64 multipart file keeps Django's alignment loop issuing tiny reads. LazyStream repeatedly slices the remaining buffered chunk while decreasing unget sizes evade its repetition guard. The analysis traces parsing through CSRF middleware, measures CPU amplification and explains a fix using full-chunk reads and one final join.
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- Researcher
- Seokchan Yoon
- Published by
- Seokchan Yoon
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This page is the archive's own catalogue record. The research is the work of Seokchan Yoon, first published at the original source. Preserved copies are kept so the citation survives its host.