CVE-2021-39139

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. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. 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.

Affected products

Alt Linux, Astra Linux, Jdk, Linuxmint, Red Hat, Suse, Ubuntu, Xalan

Xstream

< 1.4.18

Fix

Available

CVSS 3.1

8.8 HIGH

EPSS

4.5% (91th percentile)

Weakness

CWE-502, CWE-434

NVD status

Analyzed

Published

2021-08-23

No exploit for CVE-2021-39139 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.