CVE-2021-3733 (GCVE-0-2021-3733)
Vulnerability from cvelistv5
Published
2022-03-07 00:00
Modified
2026-10-14 09:49
Severity ?
CWE
  • CWE-400 - - Uncontrolled Resource Consumption
Summary
There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.
References
Impacted products
Vendor Product Version
n/a python Version: Fixed in python v3.6.14, python v3.7.11, python v3.8.10, python v3.9.5.
Show details on NVD website

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