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Scrapy is vulnerable to a denial of service (DoS) attack due to flaws in brotli decompression implementation

🗓️ 13 Jul 2026 14:36:34Reported by Python Packaging AdvisoryType 
pypa
 pypa🔗 github.com👁 4 Views

Scrapy up to 2.13.3 is vulnerable to denial of service from Brotli decompression flaws; patch requires Brotli 1.2.0.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Muliple security vulnerabilities found in IBM CICS TX Standard.
22 Apr 202614:23
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in brotli affects IBM Netezza Appliance
16 Apr 202611:17
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a denial of service in the Base OS image package: Scrapy [CVE-2025-6176]
14 Apr 202615:32
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in brotli affects IBM Netezza Appliance
27 Apr 202613:05
–ibm
IBM Security Bulletins		Security Bulletin: ELM on Hybrid Cloud vulnerabilities addressed in 2.0.0
20 Apr 202609:57
–ibm
Huntr		Brotli decompression bomb DoS
14 Jun 202518:41
–huntr
Tenable Nessus		Alibaba Cloud Linux 3 : 0039: brotli (ALINUX3-SA-2026:0039)
5 Mar 202600:00
–nessus
Tenable Nessus		AlmaLinux 10 : brotli (ALSA-2026:0845)
21 Jan 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : brotli (ALSA-2026:2042)
5 Feb 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : brotli (ALSA-2026:2389)
11 Feb 202600:00
–nessus
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Vulners
Node
pypibrotliRange0–1.2.0

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13 Jul 2026 16:03Current
7High risk
Vulners AI Score7
CVSS 37.5
EPSS0.00509
SSVC
scrapybrotlidecompression flawsdenial of serviceversion two point thirteen point threebrotli update
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