# CERT-FR Warns of Python CPython Flaws

Published: 2026-08-19 · Severity: routine · Sectors: technology
Canonical: https://vorant.io/reports/d7277a0c-928b-57fb-acdf-40ec1f2c6277/cert-fr-warns-of-python-cpython-flaws

> CERT-FR issued an advisory on multiple CPython vulnerabilities that can leak data or bypass security policies.

CERT-FR published an advisory covering multiple vulnerabilities in CPython affecting systems that lack the latest security patches. The flaws, tracked as CVE-2026-15806 and CVE-2026-17084, can lead to a confidentiality breach, a security policy bypass, and an unspecified security impact as characterized by the vendor's own bulletins.

No active exploitation or specific threat actor activity is mentioned in the advisory. Organizations running affected CPython versions should consult the referenced Python Security Announce bulletins and apply the available patches to mitigate these risks.

## Mentioned in this report

- Vulnerabilities: CVE-2026-15806, CVE-2026-17084

Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1044

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