PYSEC-2026-2401 Scrapy is vulnerable to a denial of service (DoS) attack due to flaws in brotli decompression implementation

Scrapy versions up to 2.13.3 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...

PT-2026-59078

Scrapy versions up to 2.13.3 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...

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

Scrapy versions up to 2.13.3 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...

Scrapy decompression bomb vulnerability

ImpactScrapy limits allowed response sizes by default through the DOWNLOADMAXSIZE and DOWNLOADWARNSIZE settings.However, those limits were only being enforced during the download of the raw, usually-compressed response bodies, and not during decompression, making Scrapy vulnerable to decompressio...

NewStart CGSL MAIN 7.02 : brotli Vulnerability (NS-SA-2026-0038)

The remote NewStart CGSL host, running version MAIN 7.02, has brotli packages installed that are affected by a vulnerability: - 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...

Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS

Scrapy 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 occur...

Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-10.0.1.9)

The version of AHV installed on the remote host is prior to 10.0.1.9. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-10.0.1.9 advisory. - urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTT...

Unsafe Reflection

Overview Scrapy is a high-level web crawling and web scraping framework, used to crawl websites and extract structured data from their pages. Affected versions of this package are vulnerable to Unsafe Reflection via the Referrer-Policy header handled by RefererMiddleware. An attacker can execute...

Scrapy: Arbitrary Module Import via Referrer-Policy Header in RefererMiddleware

Impact Since version 1.4.0, Scrapy respects the Referrer-Policy response header to decide whether and how to set a Referer header on follow-up requests. If the header value looked like a valid Python import path, Scrapy would import the referenced object and call it, assuming it referred to a...

Alibaba Cloud Linux 3 : 0039: brotli (ALINUX3-SA-2026:0039)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2026:0039 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2025-6176: Scrapy versions up to 2.13.2 are...

RHEL 9 : brotli (RHSA-2026:2226)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:2226 advisory. Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffma...

Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS

Scrapy 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 occur...

EulerOS Virtualization 2.10.0 : brotli (EulerOS-SA-2026-1157)

According to the versions of the brotli package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : Scrapy versions up to 2.13.2 are vulnerable to a denial of service DoS attack due to a flaw in its brotli decompression...

brotli security update

1.1.0-7 - Resolves: RHEL-133984 CVE-2025-6176 Brotli decompression bomb DoS in scrapy...

Huawei EulerOS: Security Advisory for brotli (EulerOS-SA-2026-1020)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS

Scrapy 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 occur...

TencentOS Server 4: brotli (TSSA-2025:0957)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0957 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: brotli (UTSA-2025-991041)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-991041 advisory. 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...

OESA-2025-2667 brotli security update

Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It...

Allocation of Resources Without Limits or Throttling

Overview Scrapy is a high-level web crawling and web scraping framework, used to crawl websites and extract structured data from their pages. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to insufficient protection against decompressi...