{"answers":{"affected":"8 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 8 products.","exploited":"There is no known exploitation of CVE-2020-8840 in the wild and no public exploit code.","fix":"Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.6.7.4, 2.7.9.7, 2.8.11.5 or 2.9.10.3.","what":"CVE-2020-8840 is a critical unsafe deserialization vulnerability in Debian Debian Linux, published on 10 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8840 and fix it if it is affected.\n\nWhat it is: CVE-2020-8840 is a critical unsafe deserialization vulnerability in Debian Debian Linux, published on 10 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-8840 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0.0; fixed in 2.6.7.4\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0.0; fixed in 2.6.7.4\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.7.9.7\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.7.9.7\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.8.0; fixed in 2.8.11.5\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.8.0; fixed in 2.8.11.5\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.10.3\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.10.3\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-2020-8840/ (Markdown: https://insights.sbomify.com/CVE-2020-8840/index.md)","id":"CVE-2020-8840","markdown":"https://insights.sbomify.com/CVE-2020-8840/index.md","name":"CVE-2020-8840","record":{"aliases":["CLEANSTART-2026-JE84381","DEBIAN-CVE-2020-8840","GHSA-4w82-r329-3q67","ROOT-APP-MAVEN-CVE-2020-8840","UBUNTU-CVE-2020-8840"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Java JSON library","requires_auth":"none","summary":"Attackers can achieve remote code execution via unsafe deserialization of JNDI objects in the Jackson databind library.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"jackson-databind","vendor":"fasterxml"},{"product":"oceanstor_9000_firmware","vendor":"huawei"},{"product":"oncommand_api_services","vendor":"netapp"},{"product":"oncommand_workflow_automation","vendor":"netapp"},{"product":"service_level_manager","vendor":"netapp"},{"product":"steelstore_cloud_integrated_storage","vendor":"netapp"},{"product":"global_lifecycle_management_opatch","vendor":"oracle"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"FasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":"2020-02-21","github_poc":6,"max_poc_stars":73,"metasploit":0,"nuclei":0,"refs":[{"date":"2020-02-21T15:58:25Z","kind":"github_poc","ref":"https://github.com/jas502n/jackson-CVE-2020-8840","stars":73,"title":"FasterXML/jackson-databind 远程代码执行漏洞"},{"date":"2020-02-24T07:43:12Z","kind":"github_poc","ref":"https://github.com/fairyming/CVE-2020-8840","stars":37,"title":"CVE-2020-8840：FasterXML/jackson-databind 远程代码执行漏洞"},{"date":"2020-02-23T03:51:40Z","kind":"github_poc","ref":"https://github.com/Wfzsec/FastJson1.2.62-RCE","stars":16,"title":"来源于jackson-CVE-2020-8840，需要开autotype"},{"date":"2020-11-11T07:53:21Z","kind":"github_poc","ref":"https://github.com/Veraxy00/CVE-2020-8840","stars":4,"title":"Jackson-databind远程代码执行漏洞（CVE-2020-8840）分析复现环境代码"},{"date":"2020-06-05T02:05:15Z","kind":"github_poc","ref":"https://github.com/Blyth0He/CVE-2020-8840","stars":1,"title":"jackson jndi injection"},{"date":"2021-01-26T19:10:22Z","kind":"github_poc","ref":"https://github.com/dpredrag/CVE-2020-8840","stars":1,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Deserialization of Untrusted Data in jackson-databind","id":"CVE-2020-8840","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"debian:debian_linux","products":["debian:debian_linux","fasterxml:jackson-databind","netapp:oncommand_workflow_automation","netapp:steelstore_cloud_integrated_storage"],"type":"deserialization","year":"2020"},"n_packages":8,"n_references":44,"next":{"headline":"SQL injection in n/a","id":"CVE-2020-8841"},"packages":[{"ecosystem":"Maven","fixed":["2.6.7.4"],"introduced":["2.0.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":null,"source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.6.7.4"],"introduced":["2.0.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":"pkg:maven/com.fasterxml.jackson.core/jackson-databind","source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.7.9.7"],"introduced":["2.7.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":null,"source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.7.9.7"],"introduced":["2.7.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":"pkg:maven/com.fasterxml.jackson.core/jackson-databind","source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.8.11.5"],"introduced":["2.8.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":null,"source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.8.11.5"],"introduced":["2.8.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":"pkg:maven/com.fasterxml.jackson.core/jackson-databind","source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.9.10.3"],"introduced":["2.9.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":null,"source":"GHSA-4w82-r329-3q67"},{"ecosystem":"Maven","fixed":["2.9.10.3"],"introduced":["2.9.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":"pkg:maven/com.fasterxml.jackson.core/jackson-databind","source":"GHSA-4w82-r329-3q67"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2020-8839"},"products":["n/a"],"published":"2020-02-10","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["n/a"]},"summary":"Attackers can achieve remote code execution via unsafe deserialization of JNDI objects in the Jackson databind library.","url":"https://insights.sbomify.com/CVE-2020-8840/"}