CVE-2021-21345
Description
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker who 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. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
NVD
Severity: CRITICAL
CVE ID: CVE-2021-21345
CVSS Score: 9.9
CVSS Metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub, Inc.
Severity: MEDIUM
CVE ID: CVE-2021-21345
CVSS Score: 5.8
CVSS Metrics: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N
Proof Of Concept
Nuclei Templates for CVE-2021-21345
Refrence: Project Discovery GitHub