HIGH7.9

PYSEC-2026-1874

try/except* clauses could allow bypass RestrictedPython via type confusion bug in the CPython interpreter

Quick fix

PYSEC-2026-1874 — restrictedpython: upgrade to the fixed version with the command below.

pip install --upgrade 'restrictedpython>=8.0'

Details

### Impact Via a type confusion bug in the CPython interpreter when using `try/except*` RestrictedPython could be bypassed.

We believe this should be fixed upstream in Python itself until that we remove support for `try/except*` from RestrictedPython. (It has been fixed for some Python versions.)

### Patches Patched in version 8.0 by removing support for `try/except*` clauses

### Workarounds There is no workaround.

### References none

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/restrictedpython

Introduced in: 6.0Fixed in: 8.0

Fixpip install --upgrade 'restrictedpython>=8.0'

References

https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-gmj9-h825-chq2[WEB]
https://nvd.nist.gov/vuln/detail/CVE-2025-22153[ADVISORY]
https://github.com/zopefoundation/RestrictedPython/commit/48a92c5bb617a647cffd0dadd4d5cfe626bcdb2f[WEB]
https://github.com/zopefoundation/RestrictedPython[PACKAGE]
https://pypi.org/project/restrictedpython[PACKAGE]
https://github.com/advisories/GHSA-gmj9-h825-chq2[ADVISORY]