Conda is a system-level binary package and environment manager that runs on major operating systems and platforms. Prior to 26.5.2, parse entry point def in conda/common/path/python.py accepted an unvalidated entry-point command from a noarch:python package's info/link.json metadata. CreatePythonEntryPointAction in conda/core/path actions.py interpolated that command into target short path, and PrefixPathAction.target full path joined it to the installation prefix without verifying that the result remained under the intended bin or Scripts directory. create python entry point in conda/gateways/disk/create.py then wrote an executable wrapper to the resulting path. A malicious package could use path separators, traversal segments, or an absolute command path to write outside the prefix or overwrite another in-prefix entry point during default install and environment transactions. Out-of-prefix writes require the target parent directory to exist, while an overwritten entry point can execute attacker-controlled Python when later invoked with the installing user's privileges. This issue is fixed in version 26.5.2.