UBUNTU-CVE-2026-34877

An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is cause...

CVE-2026-34877

CVE-2026-34877 concerns Mbed TLS: versions 2.19.0 through 3.6.5 and 4.0.0 have insufficient protection of serialized SSL context or session structures. An attacker who can modify serialized data may induce memory corruption, leading to arbitrary code execution due to the Incorrect Use of Privileg...

spring-security: Empty SecurityContext Is Not Properly Saved Upon Logout

A flaw was found in Spring Security. In affected versions of Spring Security, the logout support does not properly clean the security context if using serialized versions. Additionally, it is not possible to explicitly save an empty security context to the HttpSessionSecurityContextRepository. Th...