--- id: CVE-2021-39148 title: XStream is a simple library to serialize objects to XML and back again summary: >- 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 st… severity: high cvss: 8.5 cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H' cwe: - CWE-434 - CWE-502 vendor: xstream product: xstream affected: - xstream < 1.4.18 - fedora = 33 - fedora = 34 - fedora = 35 - debian_linux = 9.0 - debian_linux = 10.0 - debian_linux = 11.0 - snapmanager - business_activity_monitoring = 12.2.1.4.0 - commerce_guided_search = 11.3.2 - communications_billing_and_revenue_management_elastic_charging_engine = 11.3 - communications_billing_and_revenue_management_elastic_charging_engine = 12.0 - communications_cloud_native_core_automated_test_suite = 1.9.0 - communications_cloud_native_core_binding_support_function = 1.10.0 - communications_cloud_native_core_policy = 1.14.0 - 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 - communications_unified_inventory_management = 7.4.2 - 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 - retail_xstore_point_of_service = 20.0.1 - utilities_framework = 4.2.0.2.0 - utilities_framework = 4.2.0.3.0 - utilities_framework = 4.3.0.1.0 - utilities_framework = 4.3.0.6.0 - utilities_framework = 4.4.0.0.0 - utilities_framework = 4.4.0.2.0 - utilities_framework = 4.4.0.3.0 - utilities_testing_accelerator = 6.0.0.1.1 - webcenter_portal = 12.2.1.3.0 - webcenter_portal = 12.2.1.4.0 patched: - xstream 1.4.18 published: '2021-08-23' updated: '2026-10-07' sourceUpdated: '2026-10-07T21:17:04.497' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-39148' references: - url: >- https://github.com/x-stream/xstream/security/advisories/GHSA-qrx8-8545-4wg2 label: security-advisories@github.com - url: 'https://lists.debian.org/debian-lts-announce/2021/09/msg00017.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-20210923-0003/' 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/cpuapr2022.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/cpujul2022.html' label: security-advisories@github.com - url: 'https://x-stream.github.io/CVE-2021-39148.html' label: security-advisories@github.com - url: >- https://github.com/x-stream/xstream/security/advisories/GHSA-qrx8-8545-4wg2 label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2021/09/msg00017.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-20210923-0003/' 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/cpuapr2022.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/cpujul2022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://x-stream.github.io/CVE-2021-39148.html' label: af854a3a-2127-422b-91ae-364da2661108 tags: - nvd - cve.org epss: 0.04735 epssPercentile: 0.91617 ssvc: exploitation: none automatable: 'yes' technicalImpact: total timestamp: '2026-10-07T20:03:09.461016Z' ingestedAt: '2026-10-07T20:46:47.001Z' --- ## Overview 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. ## Affected - `xstream < 1.4.18` - `fedora = 33` - `fedora = 34` - `fedora = 35` - `debian_linux = 9.0` - `debian_linux = 10.0` - `debian_linux = 11.0` - `snapmanager` - `business_activity_monitoring = 12.2.1.4.0` - `commerce_guided_search = 11.3.2` - `communications_billing_and_revenue_management_elastic_charging_engine = 11.3` - `communications_billing_and_revenue_management_elastic_charging_engine = 12.0` - `communications_cloud_native_core_automated_test_suite = 1.9.0` - `communications_cloud_native_core_binding_support_function = 1.10.0` - `communications_cloud_native_core_policy = 1.14.0` - `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` - `communications_unified_inventory_management = 7.4.2` - `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` - `retail_xstore_point_of_service = 20.0.1` - `utilities_framework = 4.2.0.2.0` - `utilities_framework = 4.2.0.3.0` - `utilities_framework = 4.3.0.1.0` - `utilities_framework = 4.3.0.6.0` - `utilities_framework = 4.4.0.0.0` - `utilities_framework = 4.4.0.2.0` - `utilities_framework = 4.4.0.3.0` - `utilities_testing_accelerator = 6.0.0.1.1` - `webcenter_portal = 12.2.1.3.0` - `webcenter_portal = 12.2.1.4.0` ## Remediation Upgrade past the affected range: - `xstream 1.4.18`