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CVE-2025-6176

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CVE-2025-6176

Published: Oct 31, 2025

Modified: Oct 31, 2025

PUBLISHED

CVSS v3.0

7.5

HIGH

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.

VendorProductVersions

scrapy

scrapy/scrapy

affected
unspecified - <= latest

Weaknesses (CWE)

CWE-400

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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