Resource exhaustion in Scrapy Scrapy/scrapy
CVE-2025-6176
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.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.005 (40.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Scrapy Scrapy/scrapy — versions unspecified
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-6176?
- CVE-2025-6176 is a high-severity vulnerability in Scrapy Scrapy/scrapy, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-10-31.
- How severe is CVE-2025-6176?
- High severity. CVSS v3 base score is 7.5 out of 10.