redhat/python3-15-main vulnerabilities

Latest redhat/python3-15-main CVEs

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1. CVE-2026-19445 Use-after-free of a server-side SSLContext when sni_callback switches contexts

   Published 2026-09-30

   Critical·CVSS 9.2

   A remote, unauthenticated TLS client can make a server crash or call through a freed pointer if its sni_callback assigns a different context to SSLSocket.context (the documented way to select a certificate per server name) and nothing else keeps the original ssl.SSLContext alive....

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.