--- id: CVE-2021-21341 title: XStream is a Java library to serialize objects to XML and back again summary: >- XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or para… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cwe: - CWE-400 - CWE-502 vendor: netapp product: oncommand_insight affected: - oncommand_insight - activemq < 5.15.14 - activemq = 5.16.0 - activemq = 5.16.1 - jmeter < 5.5 - xstream < 1.4.16 - debian_linux = 9.0 - debian_linux = 10.0 - debian_linux = 11.0 - fedora = 33 - fedora = 34 - fedora = 35 - banking_enterprise_default_management = 2.10.0 - banking_enterprise_default_management = 2.12.0 - banking_platform = 2.4.0 - banking_platform = 2.7.1 - banking_platform = 2.9.0 - banking_platform = 2.12.0 - business_activity_monitoring = 11.1.1.9.0 - business_activity_monitoring = 12.2.1.3.0 - business_activity_monitoring = 12.2.1.4.0 - >- communications_billing_and_revenue_management_elastic_charging_engine = 12.0.0.3.0 - communications_unified_inventory_management = 7.3.2 - communications_unified_inventory_management = 7.3.4 - communications_unified_inventory_management = 7.3.5 - communications_unified_inventory_management = 7.4.0 - communications_unified_inventory_management = 7.4.1 - retail_xstore_point_of_service = 16.0.6 - retail_xstore_point_of_service = 17.0.4 - retail_xstore_point_of_service = 18.0.3 - retail_xstore_point_of_service = 19.0.2 - webcenter_portal = 11.1.1.9.0 - webcenter_portal = 12.2.1.3.0 - webcenter_portal = 12.2.1.4.0 patched: - activemq 5.15.14 - jmeter 5.5 - xstream 1.4.16 published: '2021-03-23' updated: '2026-10-07' sourceUpdated: '2026-10-07T19:17:19.470' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-21341' references: - url: 'http://x-stream.github.io/changes.html#1.4.16' label: security-advisories@github.com - url: >- https://github.com/x-stream/xstream/security/advisories/GHSA-2p3x-qw9c-25hh label: security-advisories@github.com - url: >- https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E label: security-advisories@github.com - url: >- https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E label: security-advisories@github.com - url: 'https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html' label: security-advisories@github.com - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/ label: security-advisories@github.com - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/ label: security-advisories@github.com - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/ label: security-advisories@github.com - url: 'https://security.netapp.com/advisory/ntap-20210430-0002/' label: security-advisories@github.com - url: 'https://www.debian.org/security/2021/dsa-5004' label: security-advisories@github.com - url: 'https://www.oracle.com//security-alerts/cpujul2021.html' label: security-advisories@github.com - url: 'https://www.oracle.com/security-alerts/cpujan2022.html' label: security-advisories@github.com - url: 'https://www.oracle.com/security-alerts/cpuoct2021.html' label: security-advisories@github.com - url: 'https://x-stream.github.io/CVE-2021-21341.html' label: security-advisories@github.com - url: 'https://x-stream.github.io/security.html#workaround' label: security-advisories@github.com - url: 'http://x-stream.github.io/changes.html#1.4.16' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://github.com/x-stream/xstream/security/advisories/GHSA-2p3x-qw9c-25hh label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20210430-0002/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2021/dsa-5004' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com//security-alerts/cpujul2021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpujan2022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpuoct2021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://x-stream.github.io/CVE-2021-21341.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://x-stream.github.io/security.html#workaround' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd - cve.org - exploit-available ssvc: exploitation: none automatable: 'yes' technicalImpact: partial timestamp: '2026-10-07T18:41:50.118666Z' epss: 0.77801 epssPercentile: 0.9956 exploits: github: 2 githubRepos: - 'https://github.com/s-index/CVE-2021-21341' - 'https://github.com/Mani1325/ka-cve-2021-21341' checkedAt: '2026-10-07T19:44:51.104Z' exploitAvailable: true ingestedAt: '2026-10-07T19:44:15.640Z' --- ## Overview XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is vulnerability which 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. 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 - `oncommand_insight` - `activemq < 5.15.14` - `activemq = 5.16.0` - `activemq = 5.16.1` - `jmeter < 5.5` - `xstream < 1.4.16` - `debian_linux = 9.0` - `debian_linux = 10.0` - `debian_linux = 11.0` - `fedora = 33` - `fedora = 34` - `fedora = 35` - `banking_enterprise_default_management = 2.10.0` - `banking_enterprise_default_management = 2.12.0` - `banking_platform = 2.4.0` - `banking_platform = 2.7.1` - `banking_platform = 2.9.0` - `banking_platform = 2.12.0` - `business_activity_monitoring = 11.1.1.9.0` - `business_activity_monitoring = 12.2.1.3.0` - `business_activity_monitoring = 12.2.1.4.0` - `communications_billing_and_revenue_management_elastic_charging_engine = 12.0.0.3.0` - `communications_unified_inventory_management = 7.3.2` - `communications_unified_inventory_management = 7.3.4` - `communications_unified_inventory_management = 7.3.5` - `communications_unified_inventory_management = 7.4.0` - `communications_unified_inventory_management = 7.4.1` - `retail_xstore_point_of_service = 16.0.6` - `retail_xstore_point_of_service = 17.0.4` - `retail_xstore_point_of_service = 18.0.3` - `retail_xstore_point_of_service = 19.0.2` - `webcenter_portal = 11.1.1.9.0` - `webcenter_portal = 12.2.1.3.0` - `webcenter_portal = 12.2.1.4.0` ## Remediation Upgrade past the affected range: - `activemq 5.15.14` - `jmeter 5.5` - `xstream 1.4.16`