Python Cryptographic Issues Vulnerability - CVE-2012-1150
Python before 2.6.8 2.7.x before 2.7.3 3.x before 3.1.5 and 3.2.x before 3.2.3 computes hash values without restricting the ability to trigger hash collisions predictably which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.