CVE-2021-21342XStream 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 14 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 where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. 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:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-502, CWE-918
- 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_brm_-_elastic_charging_engine oracle:communications_brm_-_elastic_charging_engine | 12.0.0.3 | 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 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-hvv8-336g-rx3mthird-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.htmlnot-applicable, patch, vendor-advisory
- https://www.oracle.com/security-alerts/cpuoct2021.htmlthird-party-advisory
- https://x-stream.github.io/CVE-2021-21342.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.