XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
VMware issues patches for end-of-life versions of Cloud Foundation Network Security Virtualization for vSphere (NSX-V) to address a critical vulnerability in an open source library. Background On October 25, VMware published VMSA-2022-0027, an advisory for multiple vulnerabilities in its VMware Cloud Foundation solution.