CVE-2021-21351

MEDIUM5.4EPSS 92.0%

XStream is vulnerable to an Arbitrary Code Execution attack

Published: 3/22/2021Modified: 12/3/2025
Also known as:GHSA-hrcp-8f3q-4w2cBIT-activemq-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.

Affected packages (3)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1MEDIUM5.4CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:H/A:N

References (24)