CVE-2025-6176 — Brotli decompression bomb DoS in scrapy/scrapy
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 decomp…
Published: 2025-10-31 · CVSS: 7.5 · CVSS 3.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7