description: 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.
problem types: CWE-400 - Uncontrolled Resource Consumption
affected:
{
vendor: n/a
product: python
versions:
version: Fixed in python v3.6.14, python v3.7.11, python v3.8.10, python v3.9.5., status: affected
}