Inefficient Algorithmic Complexity Affecting werkzeug package, versions [,2.3.8) [3.0.0,3.0.1)
Snyk CVSS
Attack Complexity
Low
Availability
High
Threat Intelligence
EPSS
0.05% (20th
percentile)
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Test your applications- Snyk ID SNYK-PYTHON-WERKZEUG-6035177
- published 26 Oct 2023
- disclosed 25 Oct 2023
- credit Paweł Srokosz
Introduced: 25 Oct 2023
CVE-2023-46136 Open this link in a new tabHow to fix?
Upgrade werkzeug to version 2.3.8, 3.0.1 or higher.
Overview
Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in multipart data parsing. An attacker can cause a denial of service and block worker processes from handling legitimate requests by sending crafted multipart data to an endpoint that will parse it, eventually exhausting or killing all available workers.
Exploiting this vulnerability is possible if the uploaded file starts with CR or LF and is followed by megabytes of data without these characters.