BIT-LIBPYTHON-2026-12003 CPython >3.11 Insecure Input Validation resulting in privilege escalation

To allow builds of Python to be run from an in-tree layout rather than an installed file layout, the VPATH variable is defined at build time and used to locate certain landmarks - specifically, Modules/setup.local. When this landmark is found relative to VPATH relative to the executable, Python...

UBUNTU-CVE-2026-12003

To allow builds of Python to be run from an in-tree layout rather than an installed file layout, the VPATH variable is defined at build time and used to locate certain landmarks - specifically, Modules/setup.local. When this landmark is found relative to VPATH relative to the executable, Python...

PT-2026-49724

Name of the Vulnerable Software and Affected Versions Python affected versions not specified Description On Windows, Python uses the VPATH variable to locate landmarks, such as 'Modules/setup.local', to determine if it is running in a source tree and adjust the default sys.path. In certain...