RUSTSEC-2025-0020 – pyo3

Package

Manager: cargo
Name: pyo3
Vulnerable Version: >=0.0.0-0 <0.24.1

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Risk of buffer overflow in `PyString::from_object` `PyString::from_object` took `&str` arguments and forwarded them directly to the Python C API without checking for terminating nul bytes. This could lead the Python interpreter to read beyond the end of the `&str` data and potentially leak contents of the out-of-bounds read (by raising a Python exception containing a copy of the data including the overflow). In PyO3 0.24.1 this function will now allocate a `CString` to guarantee a terminating nul bytes. PyO3 0.25 will likely offer an alternative API which takes `&CStr` arguments.

Metadata

Created: 2025-04-01T12:00:00Z
Modified: 2025-04-01T08:55:37Z
Source: https://osv-vulnerabilities
CWE IDs: N/A
Alternative ID: N/A
Finding: F316
Auto approve: 1