CVE-2021-21351XStream is a Java library to serialize objects to XML and back again.
Updated under an hour ago ()
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It affects netapp oncommand_insight and 15 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability 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
- 9.1 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-434, CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
netapp oncommand_insight netapp:oncommand_insight | all versions | NVD |
apache activemq apache:activemq | before 5.15.14; 5.16.0; 5.16.1 | NVD |
apache jmeter apache:jmeter | before 5.5 | NVD |
xstream xstream xstream:xstream | before 1.4.16 | NVD |
debian debian_linux debian:debian_linux | 9.0; 10.0; 11.0 | NVD |
fedoraproject fedora fedoraproject:fedora | 33; 34; 35 | NVD |
oracle banking_enterprise_default_management oracle:banking_enterprise_default_management | 2.10.0; 2.12.0 | NVD |
oracle banking_platform oracle:banking_platform | 2.4.0; 2.7.1; 2.9.0; 2.12.0 | NVD |
oracle banking_virtual_account_management oracle:banking_virtual_account_management | 14.2.0; 14.3.0; 14.5.0 | NVD |
oracle business_activity_monitoring oracle:business_activity_monitoring | 11.1.1.9.0; 12.2.1.3.0; 12.2.1.4.0 | NVD |
oracle communications_billing_and_revenue_management_elastic_charging_engine oracle:communications_billing_and_revenue_management_elastic_charging_engine | 12.0.0.3.0 | NVD |
oracle communications_policy_management oracle:communications_policy_management | 12.5.0 | NVD |
oracle communications_unified_inventory_management oracle:communications_unified_inventory_management | 7.3.2; 7.3.4; 7.3.5; 7.4.0; 7.4.1 | NVD |
oracle mysql_server oracle:mysql_server | through 8.0.27 | NVD |
oracle retail_xstore_point_of_service oracle:retail_xstore_point_of_service | 16.0.6; 17.0.4; 18.0.3; 19.0.2 | NVD |
oracle webcenter_portal oracle:webcenter_portal | 11.1.1.9.0; 12.2.1.3.0; 12.2.1.4.0 | NVD |
References
- http://x-stream.github.io/changes.html#1.4.16release-notes, third-party-advisory
- https://github.com/x-stream/xstream/security/advisories/GHSA-hrcp-8f3q-4w2cthird-party-advisory
- https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3Eissue-tracking, mailing-list, third-party-advisory
- https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3Eissue-tracking, mailing-list, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00002.htmlmailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/mailing-list, third-party-advisory
- https://security.netapp.com/advisory/ntap-20210430-0002/third-party-advisory
- https://www.debian.org/security/2021/dsa-5004mailing-list, third-party-advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlthird-party-advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlpatch, vendor-advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlthird-party-advisory
- https://x-stream.github.io/CVE-2021-21351.htmlexploit, third-party-advisory
- https://x-stream.github.io/security.html#workaroundmitigation, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.