Search/CVE-2021-21344
● CVE — Medium

CVE-2021-21344

Vendordebian, fedoraproject, xstream, apache, netappProductdebian linux, fedora, xstream, activemq, oncommand insight, communications unified inventory management, webcenter portal, banking platform, jmeter, retail xstore point of service, communications policy management, mysql server, banking virtual account management, business activity monitoring, communications billing and revenue management elastic charging engine, banking enterprise default managementDiscoveredMar 23, 2021UpdatedOct 7, 2026

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 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.

CVSS v3.1
5.3 MEDIUM
EPSS
76.0%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
Timeline
disclosure → media coverage
Mar 23, 2021
Disclosure — published as a CVE record. · last revised by NVD Oct 7, 2026