XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream, if using the version out of the box with Java runtime version 14 to 8 or with JavaFX installed. 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.
https://x-stream.github.io/CVE-2021-39153.html
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.debian.org/security/2021/dsa-5004
https://security.netapp.com/advisory/ntap-20210923-0003/
https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html
https://github.com/x-stream/xstream/security/advisories/GHSA-2q8x-2p7f-574v