CVE-2023-46136
moderate-risk
Published 2023-10-25
Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. This vulnerability has been patched in version 3.0.1.
Do I need to act?
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0.62% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.0/10
High
ADJACENT_NETWORK
/ LOW complexity
Affected Vendors
References (6)
Third Party Advisory
https://security.netapp.com/advisory/ntap-20231124-0008/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20231124-0008/
34
/ 100
moderate-risk
Severity
25/34 · High
Exploitability
2/34 · Minimal
Exposure
7/34 · Low