{"cve":"CVE-2021-39149","nvd":{"published":"2021-08-23T18:15:12.790","modified":"2026-10-07T20:17:07.337","status":"Analyzed","description":"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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.5},"cwes":["CWE-434","CWE-502"],"references":["https://github.com/x-stream/xstream/security/advisories/GHSA-3ccq-5vw3-2p6x","https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/"],"products":["debian:debian_linux","fedoraproject:fedora","netapp:snapmanager","oracle:business_activity_monitoring","oracle:commerce_guided_search","oracle:communications_billing_and_revenue_management_elastic_charging_engine","oracle:communications_cloud_native_core_automated_test_suite","oracle:communications_cloud_native_core_binding_support_function","oracle:communications_cloud_native_core_policy","oracle:communications_unified_inventory_management","oracle:retail_xstore_point_of_service","oracle:utilities_framework","oracle:utilities_testing_accelerator","oracle:webcenter_portal","xstream:xstream"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-39149","score":0.04735,"percentile":0.91792,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-3ccq-5vw3-2p6x","url":"https://osv.dev/vulnerability/GHSA-3ccq-5vw3-2p6x","summary":"XStream is vulnerable to an Arbitrary Code Execution attack","modified":"2026-07-08T06:28:07.602117514Z","packages":[{"ecosystem":"Maven","name":"com.thoughtworks.xstream:xstream","purl":"pkg:maven/com.thoughtworks.xstream/xstream","ranges":["<1.4.18"],"fixed":["1.4.18"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}