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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| scrapy | pip | < 2.11.1 | 2.11.1 |
The vulnerability stems from improper handling of decompressed data size limits. The key evidence is:
The original _decode() and gunzip() functions lacked incremental size tracking, allowing small compressed inputs to decompress to massive outputs. The patch introduced chunked decompression with size monitoring in _inflate/_unbrotli/_unzstd helpers, confirming the vulnerability existed in these functions.
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