Scrapy versions up to 2.13.2 are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to crash clients with less than 80GB of available memory. This occurs because brotli can achieve extremely high compression ratios for zero-filled data, leading to excessive memory consumption during decompression.
Metrics
Affected Vendors & Products
References
History
Fri, 31 Oct 2025 17:15:00 +0000
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ssvc
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Fri, 31 Oct 2025 10:15:00 +0000
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| First Time appeared |
Scrapy
Scrapy scrapy |
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| Vendors & Products |
Scrapy
Scrapy scrapy |
Fri, 31 Oct 2025 00:15:00 +0000
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| Description | Scrapy versions up to 2.13.2 are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to crash clients with less than 80GB of available memory. This occurs because brotli can achieve extremely high compression ratios for zero-filled data, leading to excessive memory consumption during decompression. | |
| Title | Brotli decompression bomb DoS in scrapy/scrapy | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV3_0
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Status: PUBLISHED
Assigner: @huntr_ai
Published: 2025-10-31T00:00:21.219Z
Updated: 2025-10-31T16:21:32.237Z
Reserved: 2025-06-16T15:14:45.766Z
Link: CVE-2025-6176
Updated: 2025-10-31T16:17:47.626Z
Status : Received
Published: 2025-10-31T00:15:37.333
Modified: 2025-10-31T00:15:37.333
Link: CVE-2025-6176
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