Scrapy up to 2.13.2 Brotli Decompression resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Scrapy up to 2.13.2. The affected element is an unknown function of the component Brotli Decompression Handler. Performing a manipulation results in resource consumption. This vulnerability was named CVE-2025-6176. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Scrapy up to 2.13.2. This affects some unknown functionality of the component Brotli Decompression Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at huntr.com. This vulnerability is uniquely identified as CVE-2025-6176 since 06/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 272129 (Linux Distros Unpatched Vulnerability : CVE-2025-6176), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (272129) and CERT Bund (WID-SEC-2026-0008). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Red Hat Enterprise Linux
  • Oracle Linux
  • RESF Rocky Linux
  • IBM App Connect Enterprise
  • IBM MQ

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (@huntr_ai): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 272129
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-6176

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/16/2025 CVE reserved
10/31/2025 +137 days Advisory disclosed
10/31/2025 +0 days VulDB entry created
02/09/2026 +101 days VulDB entry last update

Sourcesinfo

Advisory: huntr.com
Status: Not defined

CVE: CVE-2025-6176 (🔒)
GCVE (CVE): GCVE-0-2025-6176
GCVE (VulDB): GCVE-100-330633
CERT Bund: WID-SEC-2026-0008 - Red Hat Enterprise Linux: Mehrere Schwachstellen

Entryinfo

Created: 10/31/2025 07:27
Updated: 02/09/2026 14:49
Changes: 10/31/2025 07:27 (61), 11/01/2025 06:54 (2), 01/06/2026 17:52 (7), 02/09/2026 14:49 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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