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CVE-2021-21346mediumCWE-434CWE-502

XStream is vulnerable to an Arbitrary Code Execution attack

35Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.1epss 76%
exploitation probability
76%top 1% of all CVEs
observed exploitation
nono source reports it
What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Affected
11 products
Red Hat BPM Suite 6 · Red Hat Integration Camel K 1 · Red Hat Integration Camel Quarkus 1 · Red Hat JBoss A-MQ 6 · Red Hat JBoss BRMS 5 · and others 6
no_fix_planned: Out of support scope
Fixed
10 products (18 components)
Red Hat Enterprise Linux Client Optional (v. 7) · Red Hat Enterprise Linux ComputeNode Optional (v. 7) · Red Hat Enterprise Linux Server Optional (v. 7) · Red Hat Enterprise Linux Workstation Optional (v. 7) · RHDM 7.11.0 · and others 5
Not affected
2 products (4 components) — because the vulnerable code is not present in the product
Red Hat OpenShift Container Platform 3.11 · Red Hat OpenShift Container Platform 4
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:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N
Affected products
x-stream · xstream