Executive brief
PyO3 has type confusion when accessing data from sublasses of subclasses of native types with `abi3` feature
Affected products
- crates.io pyo3
Junglewise Threat Intelligence
PyO3 has type confusion when accessing data from sublasses of subclasses of native types with `abi3` feature
Severity: medium · CVSS 4 · Published 2026-02-19
Technologies: pyo3 (crates.io). Vendors: crates.io.
Related threats
- PyO3 has a missing `Sync` bound on `PyCFunction::new_closure` closures
- PyO3 missing Sync bound in PyCFunction new_closure
- PyO3 out-of-bounds read in list and tuple iterators
- PyO3 has an Out-of-bounds Read in `nth` / `nth_back` for `PyList` and `PyTuple` iterators
- RUSTSEC-2026-0177 - Missing `Sync` bound on `PyCFunction::new_closure` closures