CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, при специфични условия, само при определена конфигурация или състояние на системата, без вход и без действие от потребителя.
Описание
Оригинално описание
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.
Засегнати продукти
- Python Software Foundation CPython: преди 3.10.22; 3.11.0 преди 3.11.17; 3.12.0 преди 3.12.15; 3.13.0 преди 3.13.16; 3.14.0 преди 3.14.8; 3.15.0a1 преди 3.15.0rc3
Вид слабост
История
- 30 септември 2026 Публикувано
Други уязвимости в Python Software Foundation CPython
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-19445
- https://nvd.nist.gov/vuln/detail/CVE-2026-19445
- https://github.com/python/cpython/pull/158504
- https://mail.python.org/archives/list/[email protected]/thread/QMQIUQB6WGGC3MI7I3WKQXOYOBDSPPS3/
- https://github.com/python/cpython/issues/156293
- https://github.com/python/cpython/commit/34a53dce8174da2fceb12fe084a4def02a10053d
- https://github.com/python/cpython/commit/46133cd57d309652139ada74014aca7665ac552b
- https://github.com/python/cpython/commit/63fab143d94cafae71850831acfb52041ba44af7
- https://github.com/python/cpython/commit/cd7e51e7d4563866fbaa1e2521ae69b45daf3698
- https://github.com/python/cpython/commit/d8717ed01717a9641686e6e6f83f0ab8af235e2c
- https://github.com/python/cpython/commit/b12968cefe69ca1dcb8606c832ff73ee7dbf4ba8
- https://github.com/python/cpython/commit/ec44b5a3258cbda947d5e07242ee562ed05ef24b
- http://www.openwall.com/lists/oss-security/2026/09/30/17