{"answers":{"affected":"2 open source packages ship an affected version, including com.thoughtworks.xstream:xstream. It affects 15 products.","exploited":"There is no known exploitation of CVE-2021-39145 in the wild and no public exploit code.","fix":"Upgrade com.thoughtworks.xstream:xstream to 1.4.18 or later.","what":"CVE-2021-39145 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 23 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-39145 and fix it if it is affected.\n\nWhat it is: CVE-2021-39145 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 23 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-39145 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.thoughtworks.xstream:xstream (Maven): affected all versions; fixed in 1.4.18\n- com.thoughtworks.xstream:xstream (Maven): affected all versions; fixed in 1.4.18\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-39145/ (Markdown: https://insights.sbomify.com/CVE-2021-39145/index.md)","id":"CVE-2021-39145","markdown":"https://insights.sbomify.com/CVE-2021-39145/index.md","name":"CVE-2021-39145","record":{"aliases":["DEBIAN-CVE-2021-39145","GHSA-8jrj-525p-826v","UBUNTU-CVE-2021-39145"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java XML serialization library","requires_auth":"low_privilege","summary":"Remote attackers can execute arbitrary code by manipulating serialized input streams in the XStream library, requiring an upgrade to secure versions.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"snapmanager","vendor":"netapp"},{"product":"business_activity_monitoring","vendor":"oracle"},{"product":"commerce_guided_search","vendor":"oracle"},{"product":"communications_billing_and_revenue_management_elastic_charging_engine","vendor":"oracle"},{"product":"communications_cloud_native_core_automated_test_suite","vendor":"oracle"},{"product":"communications_cloud_native_core_binding_support_function","vendor":"oracle"},{"product":"communications_cloud_native_core_policy","vendor":"oracle"},{"product":"communications_unified_inventory_management","vendor":"oracle"},{"product":"retail_xstore_point_of_service","vendor":"oracle"},{"product":"utilities_framework","vendor":"oracle"},{"product":"utilities_testing_accelerator","vendor":"oracle"},{"product":"webcenter_portal","vendor":"oracle"},{"product":"xstream","vendor":"xstream"}],"cvss":{"score":8.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"},{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"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.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"XStream is vulnerable to an Arbitrary Code Execution attack","id":"CVE-2021-39145","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","netapp:snapmanager","oracle:commerce_guided_search","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:webcenter_portal"],"type":"deserialization","year":"2021"},"n_packages":2,"n_references":11,"next":{"headline":"XStream is vulnerable to an Arbitrary Code Execution attack","id":"CVE-2021-39146"},"packages":[{"ecosystem":"Maven","fixed":["1.4.18"],"introduced":["0"],"last_affected":[],"package":"com.thoughtworks.xstream:xstream","purl":null,"source":"GHSA-8jrj-525p-826v"},{"ecosystem":"Maven","fixed":["1.4.18"],"introduced":["0"],"last_affected":[],"package":"com.thoughtworks.xstream:xstream","purl":"pkg:maven/com.thoughtworks.xstream/xstream","source":"GHSA-8jrj-525p-826v"}],"prev":{"headline":"XStream Remote Code Execution","id":"CVE-2021-39144"},"products":["xstream"],"published":"2021-08-23","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["x-stream"]},"summary":"Remote attackers can execute arbitrary code by manipulating serialized input streams in the XStream library, requiring an upgrade to secure versions.","url":"https://insights.sbomify.com/CVE-2021-39145/"}