The libcurl library contains a flaw where the command to clear proxy authentication credentials does not function correctly. As a result, previous proxy credentials remain stored and are reused in later transfers that should not have access to those credentials. This behavior could lead to unintended credential exposure or misuse across different network transfers.

The vulnerability may cause proxy authentication credentials to persist beyond their intended scope, potentially allowing unauthorized use of these credentials in subsequent network transfers. This could lead to credential leakage or unauthorized access if different transfers are expected to use separate credentials.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider avoiding scenarios where proxy authentication credentials need to be cleared or reused, or implement additional controls to isolate credential usage.