Posted by Alan Coopersmith on Sep 30 Forwarded Message Subject: [Security-announce][CVE-2026-19445] Use-after-free of a server-side SSLContext when sni_callback switches contexts Date: Wed, 30 Sep 2026 16:10:08 +0000 From: Seth Larson Reply-To: security-sig () python org To: security-announce () python org There is a CRITICAL severity vulnerability affecting CPython. A remote, unauthenticated TLS client can make a...

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