XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker 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. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2769-1 libxstream-java security update
Debian DSA Debian DSA DSA-5004-1 libxstream-java security update
Github GHSA Github GHSA GHSA-j9h8-phrw-h4fh XStream is vulnerable to a Remote Command Execution attack
Ubuntu USN Ubuntu USN USN-5946-1 XStream vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 22 Oct 2025 09:30:00 +0900


Wed, 22 Oct 2025 05:30:00 +0900


Wed, 22 Oct 2025 04:30:00 +0900


Sat, 24 May 2025 02:15:00 +0900

Type Values Removed Values Added
First Time appeared Xstream
Xstream xstream
CPEs cpe:2.3:a:xstream_project:xstream:*:*:*:*:*:*:*:* cpe:2.3:a:xstream:xstream:*:*:*:*:*:*:*:*
Vendors & Products Xstream Project
Xstream Project xstream
Xstream
Xstream xstream

Fri, 07 Feb 2025 05:15:00 +0900

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2023-03-10'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 14 Aug 2024 09:45:00 +0900

Type Values Removed Values Added
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-10-21T23:25:37.489Z

Reserved: 2021-08-16T00:00:00.000Z

Link: CVE-2021-39144

cve-icon Vulnrichment

Updated: 2024-08-04T01:58:18.167Z

cve-icon NVD

Status : Analyzed

Published: 2021-08-23T18:15:12.087

Modified: 2025-10-24T14:47:35.010

Link: CVE-2021-39144

cve-icon Redhat

Severity : Important

Publid Date: 2021-08-22T00:00:00Z

Links: CVE-2021-39144 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses