CVE-2025-22153: Zopefoundation Restrictedpython

High severity, CVSS 7.9. EPSS: 0.4% chance of exploitation in the next 30 days.

RestrictedPython is a tool that helps to define a subset of the Python language which allows to provide a program input into a trusted environment. Via a type confusion bug in versions of the CPython interpreter starting in 3.11 and prior to 3.13.2 when using `try/except*`, RestrictedPython starting in version 6.0 and prior to version 8.0 could be bypassed. The issue is patched in version 8.0 of RestrictedPython by removing support for `try/except*` clauses. No known workarounds are available.

Affected products

• Zopefoundation Restrictedpython: from 6.0, before 8.0 (fixed in 8.0)

Published 2025-01-23. Last modified 2026-06-17.