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XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade libxstream-java | Feb 17, 2022 | Feb 1, 2022 |
| Freebsd | — | Upgrade jenkins-ltsUpgrade jenkins | Nov 4, 2022 | Feb 10, 2022 |
| Jenkins 2022 02 09 | — | Upgrade Jenkins LTS to the latest versionUpgrade Jenkins to the latest versionUpgrade Jenkins LTS to version 2.319.3Upgrade Jenkins to version 2.334 | Jul 23, 2026 | Feb 1, 2022 |
| Redhat Openshift | — | Upgrade jenkins | Apr 29, 2022 | Jan 29, 2022 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 1, 2022 |
| Suse | — | Upgrade xstreamUpgrade xstream-benchmarkUpgrade xstream-parentUpgrade xstream-javadoc | Mar 15, 2022 | Feb 1, 2022 |
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