CVE-2025-22153 HIGH

CVE-2025-22153: try/except* clauses could allow bypass RestrictedPython via type confusion bug in the CPython interpreter

Vendor Zopefoundation

Product RestrictedPython

Weakness CWE-843

Published January 23, 2025

Last update February 12, 2025

View on NVD All CVEs

CVSS base score

7.9/10

Attack vector Network

Attack complexity High

Privileges required High

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L

What the vulnerability does

Description

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.

Key dates

Disclosure timeline

January 23, 2025 CVE published

February 12, 2025 Record updated