Bug 2408762 (CVE-2025-6176) - CVE-2025-6176 Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS
Summary: CVE-2025-6176 Scrapy: python-scrapy: brotli: Python brotli decompression bomb...
Keywords:
Status: NEW
Alias: CVE-2025-6176
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2411734 2411735 2419492 2411733 2419490 2419491 2419493
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-31 01:01 UTC by OSIDB Bzimport
Modified: 2026-02-09 13:48 UTC (History)
82 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:2087 0 None None None 2026-02-05 12:24:41 UTC
Red Hat Product Errata RHBA-2026:2204 0 None None None 2026-02-05 23:18:19 UTC
Red Hat Product Errata RHBA-2026:2324 0 None None None 2026-02-09 11:36:04 UTC
Red Hat Product Errata RHBA-2026:2339 0 None None None 2026-02-09 13:48:15 UTC
Red Hat Product Errata RHSA-2026:0008 0 None None None 2026-01-05 01:17:12 UTC
Red Hat Product Errata RHSA-2026:0845 0 None None None 2026-01-20 12:02:36 UTC
Red Hat Product Errata RHSA-2026:2042 0 None None None 2026-02-05 09:36:33 UTC
Red Hat Product Errata RHSA-2026:2226 0 None None None 2026-02-09 01:33:47 UTC
Red Hat Product Errata RHSA-2026:2227 0 None None None 2026-02-09 02:24:21 UTC
Red Hat Product Errata RHSA-2026:2228 0 None None None 2026-02-09 02:14:47 UTC
Red Hat Product Errata RHSA-2026:2229 0 None None None 2026-02-09 02:16:12 UTC

Description OSIDB Bzimport 2025-10-31 01:01:20 UTC 
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.
Comment 3 errata-xmlrpc 2026-01-05 01:17:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:0008 https://access.redhat.com/errata/RHSA-2026:0008
Comment 5 errata-xmlrpc 2026-01-20 12:02:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:0845 https://access.redhat.com/errata/RHSA-2026:0845
Comment 6 errata-xmlrpc 2026-02-05 09:36:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2042 https://access.redhat.com/errata/RHSA-2026:2042
Comment 7 errata-xmlrpc 2026-02-09 01:33:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:2226 https://access.redhat.com/errata/RHSA-2026:2226
Comment 8 errata-xmlrpc 2026-02-09 02:14:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:2228 https://access.redhat.com/errata/RHSA-2026:2228
Comment 9 errata-xmlrpc 2026-02-09 02:16:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:2229 https://access.redhat.com/errata/RHSA-2026:2229
Comment 10 errata-xmlrpc 2026-02-09 02:24:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:2227 https://access.redhat.com/errata/RHSA-2026:2227
Note You need to log in before you can comment on or make changes to this bug.