GHSA-vxcf-c7mx-pg53
Build corruption when using `PYO3_CONFIG_FILE` environment variable
In PyO3 0.23.0 the PYO3_CONFIG_FILE environment variable used to configure builds regressed such that changing the environment variable would no longer trigger PyO3 to reconfigure and recompile. In combination with workflows using tools such as maturin to build for multiple versions in a single build, this leads to Python wheels being compiled against the wrong Python API version.
All users who distribute artefacts for multiple Python versions are encouraged to update and rebuild with PyO3 0.23.3. Affected wheels produced from PyO3 0.23.0 through 0.23.2 are highly unstable and will crash the Python interpreter in unpredictable ways.
What each source reports
GitHub Advisories No score
Build corruption when using `PYO3_CONFIG_FILE` environment variable
In PyO3 0.23.0 the PYO3_CONFIG_FILE environment variable used to configure builds regressed such that changing the environment variable would no longer trigger PyO3 to reconfigure and recompile. In combination with workflows using tools such as maturin to build for multiple versions in a single build, this leads to Python wheels being compiled against the wrong Python API version.
All users who distribute artefacts for multiple Python versions are encouraged to update and rebuild with PyO3 0.23.3. Affected wheels produced from PyO3 0.23.0 through 0.23.2 are highly unstable and will crash the Python interpreter in unpredictable ways.
- Record
GHSA-vxcf-c7mx-pg53- Updated
- 2026-11-02
OSV No score
Build corruption when using `PYO3_CONFIG_FILE` environment variable
In PyO3 0.23.0 the PYO3_CONFIG_FILE environment variable used to configure builds regressed such that changing the environment variable would no longer trigger PyO3 to reconfigure and recompile. In combination with workflows using tools such as maturin to build for multiple versions in a single build, this leads to Python wheels being compiled against the wrong Python API version.
All users who distribute artefacts for multiple Python versions are encouraged to update and rebuild with PyO3 0.23.3. Affected wheels produced from PyO3 0.23.0 through 0.23.2 are highly unstable and will crash the Python interpreter in unpredictable ways.
- Record
GHSA-vxcf-c7mx-pg53- Updated
- 2026-11-02
OSVRUSTSEC-2024-0409 No score
Build corruption when using `PYO3_CONFIG_FILE` environment variable
In PyO3 0.23.0 the PYO3_CONFIG_FILE environment variable used to configure builds regressed such that changing the environment variable would no longer trigger PyO3 to reconfigure and recompile. In combination with workflows using tools such as maturin to build for multiple versions in a single build, this leads to Python wheels being compiled against the wrong Python API version.
All users who distribute artefacts for multiple Python versions are encouraged to update and rebuild with PyO3 0.23.3. Affected wheels produced from PyO3 0.23.0 through 0.23.2 are highly unstable and will crash the Python interpreter in unpredictable ways.
- Record
RUSTSEC-2024-0409- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pyo3crates.io |
0.23.0 up to 0.23.3 | 0.23.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-vxcf-c7mx-pg53 is a vulnerability with no CVSS score yet in pyo3, published December 4, 2024. No source lists public exploit code. Fixed in pyo3 0.23.3.