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.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2616-1 libxstream-java security update
Debian DSA Debian DSA DSA-5004-1 libxstream-java security update
Github GHSA Github GHSA GHSA-hwpc-8xqv-jvj4 XStream is vulnerable to a Remote Command Execution attack
Ubuntu USN Ubuntu USN USN-4943-1 XStream vulnerabilities
Ubuntu USN Ubuntu USN USN-6978-1 XStream vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 23 May 2025 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache activemq
Apache jmeter
Netapp
Netapp oncommand Insight
Xstream
Xstream xstream
CPEs cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:* cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:activemq:5.16.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:activemq:5.16.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:jmeter:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
cpe:2.3:a:xstream:xstream:*:*:*:*:*:*:*:*
Vendors & Products Xstream Project
Xstream Project xstream
Apache
Apache activemq
Apache jmeter
Netapp
Netapp oncommand Insight
Xstream
Xstream xstream

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-03T18:09:15.855Z

Reserved: 2020-12-22T00:00:00

Link: CVE-2021-21345

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-03-23T00:15:12.787

Modified: 2025-05-23T17:41:10.117

Link: CVE-2021-21345

cve-icon Redhat

Severity : Important

Publid Date: 2021-03-12T00:00:00Z

Links: CVE-2021-21345 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses