GHSA-47qc-857f-7w7f

Source

https://github.com/advisories/GHSA-47qc-857f-7w7f

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-47qc-857f-7w7f/GHSA-47qc-857f-7w7f.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-47qc-857f-7w7f

Aliases

RUSTSEC-2026-0013

Published

2026-02-19T20:25:46Z

Modified

2026-02-23T07:26:19.729428Z

Severity

7.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U CVSS Calculator

Summary

PyO3 has type confusion when accessing data from sublasses of subclasses of native types with `abi3` feature

Details

PyO3 0.28.1 added support for #[pyclass(extends=PyList)] struct NativeSub (and other native types) when targeting Python 3.12 and up with the abi3 feature.

It was discovered that subclasses of such classes would use the type of the subclass when attempting to access to data of NativeSub contained within Python objects, amounting to memory corruption.

PyO3 0.28.2 fixed the issue by using the type of (e.g.) NativeSub correctly.

Database specific

{
    "nvd_published_at": null,
    "github_reviewed_at": "2026-02-19T20:25:46Z",
    "github_reviewed": true,
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-843"
    ]
}

References

Affected packages

crates.io / pyo3

Package

Name: pyo3; View open source insights on deps.dev
Purl: pkg:cargo/pyo3

Affected ranges

Type: SEMVER
Events: Introduced

0.28.0

Fixed

0.28.2

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-47qc-857f-7w7f/GHSA-47qc-857f-7w7f.json"