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PyO3 has a missing `Sync` bound on `PyCFunction::new_closure` closures
PyO3 has a missing `Sync` bound on `PyCFunction::new_closure` closures
Affected packages
- pyo3
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/PyO3/pyo3/pull/6096
- https://github.com/PyO3/pyo3
- https://github.com/PyO3/pyo3/releases/tag/v0.29.0
- https://rustsec.org/advisories/RUSTSEC-2026-0177.html
Structured record: https://osv.dev/vulnerability/GHSA-chgr-c6px-7xpp
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