High 8.5Published Aug 23, 2021

CVE-2021-39147XStream is a simple library to serialize objects to XML and back again.

Updated under an hour ago (Oct 26, 2026, 4:23 PM ET)

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It affects xstream 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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Every CVE for xstream

Exploited in the last 30 days

XStream is a simple library to serialize objects to XML and back again. In affected versions this 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. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

CVSS: 8.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:L/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

Affected products

xstream xstream xstream:xstream	before 1.4.18	NVD
fedoraproject fedora fedoraproject:fedora	33; 34; 35	NVD
debian debian_linux debian:debian_linux	9.0; 10.0; 11.0	NVD
netapp snapmanager netapp:snapmanager	all versions; all versions	NVD
oracle business_activity_monitoring oracle:business_activity_monitoring	12.2.1.4.0	NVD
oracle commerce_guided_search oracle:commerce_guided_search	11.3.2	NVD
oracle communications_billing_and_revenue_management_elastic_charging_engine oracle:communications_billing_and_revenue_management_elastic_charging_engine	11.3; 12.0	NVD
oracle communications_cloud_native_core_automated_test_suite oracle:communications_cloud_native_core_automated_test_suite	1.9.0	NVD
oracle communications_cloud_native_core_binding_support_function oracle:communications_cloud_native_core_binding_support_function	1.10.0	NVD
oracle communications_cloud_native_core_policy oracle:communications_cloud_native_core_policy	1.14.0	NVD
1–10 of 15

References

References

https://github.com/x-stream/xstream/security/advisories/GHSA-h7v4-7xg3-hxcc	third-party-advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html	mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/	mailing-list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/	mailing-list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/	mailing-list
https://security.netapp.com/advisory/ntap-20210923-0003/	third-party-advisory
https://www.debian.org/security/2021/dsa-5004	third-party-advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	patch, third-party-advisory
https://www.oracle.com/security-alerts/cpujan2022.html	patch, third-party-advisory
https://www.oracle.com/security-alerts/cpujul2022.html	third-party-advisory
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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.