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. Prior to 8.3, check_function_argument_names() rejected protected guard hook names for regular, variadic, and keyword-only arguments but omitted positional-only arguments, allowing __getattr__, _getitem_, _write_, or _print_ to be shadowed by a local parameter and bypass the embedding application's access policy. This issue is fixed in version 8.3.
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Affected Vendors & Products
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History
Thu, 09 Jul 2026 14:30:00 +0000
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Wed, 08 Jul 2026 22:45:00 +0000
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Zope restrictedpython |
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Zope restrictedpython |
Wed, 08 Jul 2026 21:45:00 +0000
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| 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. Prior to 8.3, check_function_argument_names() rejected protected guard hook names for regular, variadic, and keyword-only arguments but omitted positional-only arguments, allowing __getattr__, _getitem_, _write_, or _print_ to be shadowed by a local parameter and bypass the embedding application's access policy. This issue is fixed in version 8.3. | |
| Title | RestrictedPython guard hooks can be shadowed via positional-only arguments | |
| Weaknesses | CWE-184 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-07-08T21:16:36.200Z
Updated: 2026-07-09T13:46:21.968Z
Reserved: 2026-06-17T16:29:38.864Z
Link: CVE-2026-55830
Updated: 2026-07-09T13:46:18.983Z
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