CVE-2025-6176
Scrapy is vulnerable to a denial of service (DoS) attack due to flaws in brotli decompression implementation
7.5
HIGH
CVSS 3.1
EPSS 0.04%
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.
How to fix CVE-2025-6176
To remediate CVE-2025-6176, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 1.2.0 or later
- —upgrade to 2.13.4 or later
Is CVE-2025-6176 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0
- from 0, < 1.2.0
- from 0, < 2.13.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |