https://seclists.org/oss-sec/2026/q3/1029: CPython [CVE-2026-19553] SSLContext.wrap_bio() missing validation of server_hostname parameter
Published Sep 30, 2026
·Updated
Affected Software
1 affected component
Python Software Foundation CPython
Frequently Asked Questions
1
How can I determine whether a deployed CPython version is affected?
The announcement directs users to the CVE record for the latest affected-version information: https://www.cve.org/CVERecord?id=CVE-2026-19553