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

The Mbed TLS SSL library is vulnerable in versions 2.19.0 through 3.6.5 and version 4.0.0 . The root cause is the Incorrect Use of Privileged APIs , specifically regarding the insufficient protection of serialized SSL context or session structures . An attacker capable of modifying these serializ...

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...