https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-03T06:59:36.693689+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/certfr-2026-avi-1243 certfr-2026-avi-1243 — De multiples vulnérabilités ont été découvertes dans CPython. Elles permettent à un attaquant de provoquer un déni de s… 2026-10-03T06:59:36.766782+00:00 certfr-2026-avi-1243 https://vulnerability.circl.lu/vuln/fkie_cve-2026-19445 fkie_cve-2026-19445 2026-10-03T06:59:36.766857+00:00

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.

 https://vulnerability.circl.lu/vuln/ghsa-7jvw-f348-84gq GHSA-7jvw-f348-84gq 2026-10-03T06:59:36.766920+00:00

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.

 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-19445 UBUNTU-CVE-2026-19445 2026-10-03T06:59:36.766955+00:00

Affected: Ubuntu:Pro:14.04:LTS: python2.7, Ubuntu:Pro:14.04:LTS: python3.4, Ubuntu:Pro:14.04:LTS: python3.5, Ubuntu:Pro:16.04:LTS: python2.7, Ubuntu:Pro:16.04:LTS: python3.5, Ubuntu:Pro:18.04:LTS: python2.7, Ubuntu:Pro:18.04:LTS: python3.6, Ubuntu:Pro:18.04:LTS: python3.7, Ubuntu:Pro:18.04:LTS: python3.8, Ubuntu:Pro:20.04:LTS: python3.8 and 7 more

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.