Threats Tagged 'cve-2026-19445'
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Threats Tagged 'cve-2026-19445'
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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. Typical cases are servers that create an SSLContext per connection or replace it while connections are open; servers that wrap their listening socket with it are not affected. Mitigation: keep a reference to every SSLContext that sets sni_callback for the lifetime of the server. TLS clients are not affected. Join the discussion | CVE Database V5 | 09/30/2026, 16:16:04 UTC Added: 09/30/2026, 16:49:12 UTC |
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