CVE-2021-21351
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 may allow a remote attacker to load and execute arbitrary code from a remote 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-2021-21351
CVSS Score: 9.1
CVSS Metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
GitHub, Inc.
Severity: MEDIUM
CVE ID: CVE-2021-21351
CVSS Score: 5.4
CVSS Metrics: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:N
Proof Of Concept
Nuclei Templates for CVE-2021-21351
Refrence: Project Discovery GitHub