CVE-2026-2297

CVE-2026-2297 concerns CPython’s import system: the SourcelessFileLoader (legacy .pyc handling) is misimplemented in FileLoader, causing it not to use io.open_code() to read .pyc files. As a result, sys.audit events for this audit point do not fire. The description notes an audit-impacting behavi...

CVE-2026-2297 SourcelessFileLoader does not use io.open_code()

The import hook in CPython that handles legacy .pyc files SourcelessFileLoader is incorrectly handled in FileLoader a base class and so does not use io.opencode to read the .pyc files. sys.audit handlers for this audit event therefore do not fire...