EXPOSURES › CVE-2026-74899

▸ RECOMMENDED ACTION  Critical severity — schedule patching of the affected products.

openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in IsolatedPluginExecutor that exposes Python type objects in restricted exec() builtins. Attackers can traverse the Python class hierarchy via __class__.__mro__.__subclasses__() to access system functions and execute arbitrary OS commands.