critical
CVE-2021-21346
XStream: Unsafe deserizaliation of sun.swing.SwingLazyValue
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA6.1CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Bitnami9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, Bitnami. Rated lower by Red Hat (high), Amazon (high), Oracle (high), GHSA (medium), Ubuntu (medium).
Description
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | activemq | 5.15.14 |
| amazon linux 2 | xstream, xstream-javadoc | 1.3.1-13.amzn2 |
| debian 10 | libxstream-java | 1.4.11.1-1+deb10u3 |
| debian 11 | libxstream-java | 1.4.15-2 |
| debian 12 | libxstream-java | 1.4.15-2 |
| debian 13 | libxstream-java | 1.4.15-2 |
| debian 14 | libxstream-java | 1.4.15-2 |
| debian 9 | libxstream-java | 1.4.11.1-1+deb9u2 |
| echo | libxstream-java | 1.4.15-2 |
| maven::GitHub Security Advisory Maven | com.thoughtworks.xstream:xstream | 1.4.16 |
| Oracle Linux 7 | xstream, xstream-javadoc | 1.3.1-13.el7_9 |
| rapidfort ubuntu 20.04 | libxstream-java | 0:1.4.19-1 |
Show all 25 entries from 23 sources
| Source | Package | Fixed in |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | activemq | 5.15.14 |
| amazon linux 2 | xstream | 1.3.1-13.amzn2 |
| amazon linux 2 | xstream-javadoc | 1.3.1-13.amzn2 |
| debian 10 | libxstream-java | 1.4.11.1-1+deb10u3 |
| debian 11 | libxstream-java | 1.4.15-2 |
| debian 12 | libxstream-java | 1.4.15-2 |
| debian 13 | libxstream-java | 1.4.15-2 |
| debian 14 | libxstream-java | 1.4.15-2 |
| debian 9 | libxstream-java | 1.4.11.1-1+deb9u2 |
| echo | libxstream-java | 1.4.15-2 |
| maven::GitHub Security Advisory Maven | com.thoughtworks.xstream:xstream | 1.4.16 |
| Oracle Linux 7 | xstream | 1.3.1-13.el7_9 |
| Oracle Linux 7 | xstream-javadoc | 1.3.1-13.el7_9 |
| rapidfort ubuntu 20.04 | libxstream-java | 0:1.4.19-1 |
| rapidfort ubuntu 22.04 | libxstream-java | 0:1.4.19-1 |
| rapidfort ubuntu 24.04 | libxstream-java | 0:1.4.19-1 |
| ubuntu 14.04-ESM | libxstream-java | 1.4.7-1ubuntu0.1+esm2 |
| ubuntu 16.04-ESM | libxstream-java | 1.4.8-1ubuntu0.1+esm3 |
| ubuntu 18.04 | libxstream-java | 1.4.11.1-1~18.04.2 |
| ubuntu 18.04-ESM | libxstream-java | 1.4.11.1-1~18.04.2 |
| ubuntu 20.04 | libxstream-java | 1.4.11.1-1ubuntu0.2 |
| ubuntu 20.04-ESM | libxstream-java | 1.4.11.1-1ubuntu0.2 |
| ubuntu 20.10 | libxstream-java | 1.4.11.1-2ubuntu0.1 |
| ubuntu 21.04 | libxstream-java | 1.4.15-1ubuntu0.1 |
| ubuntu 22.04 | libxstream-java | no fix listed |
References
- http://x-stream.github.io/changes.html#1.4.16
- https://access.redhat.com/security/cve/CVE-2021-21346
- https://github.com/x-stream/xstream
- https://github.com/x-stream/xstream/security/advisories/GHSA-4hrm-m67v-5cxr
- https://linux.oracle.com/cve/CVE-2021-21346.html
- https://linux.oracle.com/errata/ELSA-2021-1354.html
- https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd@%3Cusers.activemq.apache.org%3E
- https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0@%3Cdev.jmeter.apache.org%3E
All 27 references
- https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/
- https://nvd.nist.gov/vuln/detail/CVE-2021-21346
- https://security.netapp.com/advisory/ntap-20210430-0002
- https://security.netapp.com/advisory/ntap-20210430-0002/
- https://ubuntu.com/security/notices/USN-4943-1
- https://ubuntu.com/security/notices/USN-6978-1
- https://www.cve.org/CVERecord?id=CVE-2021-21346
- https://www.debian.org/security/2021/dsa-5004
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://x-stream.github.io/CVE-2021-21346.html
- https://x-stream.github.io/security.html#workaround