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GHSA-44vg-5wv2-h2hg

SimpleEval: Objects (including modules) can leak dangerous modules through to direct access inside the sandbox

Source: GitHub Advisory Database (reviewed) High CVE-2026-32640

Packages

EcosystemPackageAffectedFixed in
PyPI simpleeval < 1.0.5 1.0.5

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact If the objects passed in as `names` to SimpleEval have modules or other disallowed / dangerous objects available as attrs. Additionally, dangerous functions or modules could be accessed by passing them as callbacks to other safe functions to call. Examples (found by @ByamB4): Any module where non-underscore attribute chains reach os or sys: - os.path, pathlib, shutil, glob (direct .os / .sys attributes) - statistics (has .sys) - numpy (has .ctypeslib.os and .f2py.sys) - urllib.parse (has .warnings.sys) ### Patches The latest version 1.0.5 has this issue fixed. ### Workarounds Don't pass in objects or modules which have direct attributes to potentially dangerous items. Use a wrapper to wrap the potentially vulnerable items (See the ModuleWrapper in version 1.0.5)

References

External links from the advisory. They lead to third-party sites.