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 request data from internal resources that are not publicly available 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.
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
EUVD EUVD EUVD-2021-0651 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 request data from internal resources that are not publicly available 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.
Github GHSA Github GHSA GHSA-f6hm-88x3-mfjv A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host
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

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-03T18:09:15.735Z

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

Link: CVE-2021-21349

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-03-23T00:15:13.193

Modified: 2025-05-23T17:42:48.900

Link: CVE-2021-21349

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2021-21349 - Bugzilla

cve-icon OpenCVE Enrichment

No data.