{"answers":{"affected":"5 open source packages ship an affected version, including nifi and com.fasterxml.jackson.core:jackson-databind. It affects 9 products.","exploited":"There is no known exploitation of CVE-2021-20190 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-20190 is a high-severity unsafe deserialization vulnerability in Apache Nifi, published on 19 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20190 and fix it if it is affected.\n\nWhat it is: CVE-2021-20190 is a high-severity unsafe deserialization vulnerability in Apache Nifi, published on 19 Jan 2021. 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-2021-20190 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nifi (Bitnami): affected from 1.7.0 up to 1.12.1; no fix listed\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected all versions; fixed in 2.6.7.5\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected all versions; fixed in 2.6.7.5\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.9.10.7\n- com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.9.10.7\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-2021-20190/ (Markdown: https://insights.sbomify.com/CVE-2021-20190/index.md)","id":"CVE-2021-20190","markdown":"https://insights.sbomify.com/CVE-2021-20190/index.md","name":"CVE-2021-20190","record":{"aliases":["BIT-nifi-2021-20190","CLEANSTART-2026-RI88730","DEBIAN-CVE-2021-20190","GHSA-5949-rw7g-wx7w","ROOT-APP-MAVEN-CVE-2021-20190","UBUNTU-CVE-2021-20190"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java JSON library","requires_auth":"none","summary":"Attackers can exploit unsafe deserialization in jackson-databind to execute arbitrary code or cause denial of service.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"nifi","vendor":"apache"},{"product":"debian_linux","vendor":"debian"},{"product":"jackson-databind","vendor":"fasterxml"},{"product":"active_iq_unified_manager","vendor":"netapp"},{"product":"oncommand_api_services","vendor":"netapp"},{"product":"oncommand_insight","vendor":"netapp"},{"product":"service_level_manager","vendor":"netapp"},{"product":"commerce_experience_manager","vendor":"oracle"},{"product":"commerce_guided_search","vendor":"oracle"}],"cvss":{"score":8.1,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:H/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":"A flaw was found in jackson-databind before 2.9.10.7. FasterXML mishandles the interaction between serialization gadgets and typing. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.","ecosystems":["Bitnami","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":"Deserialization of untrusted data in jackson-databind","id":"CVE-2021-20190","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:nifi","products":["apache:nifi","debian:debian_linux","fasterxml:jackson-databind","netapp:active_iq_unified_manager","netapp:oncommand_insight","oracle:commerce_experience_manager","oracle:commerce_guided_search"],"type":"deserialization","year":"2021"},"n_packages":5,"n_references":6,"next":{"headline":"Insertion of Sensitive Information into Log File in ansible","id":"CVE-2021-20191"},"packages":[{"ecosystem":"Bitnami","fixed":[],"introduced":["1.7.0"],"last_affected":["1.12.1"],"package":"nifi","purl":"pkg:bitnami/nifi","source":"BIT-nifi-2021-20190"},{"ecosystem":"Maven","fixed":["2.6.7.5"],"introduced":["0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":null,"source":"GHSA-5949-rw7g-wx7w"},{"ecosystem":"Maven","fixed":["2.6.7.5"],"introduced":["0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":"pkg:maven/com.fasterxml.jackson.core/jackson-databind","source":"GHSA-5949-rw7g-wx7w"},{"ecosystem":"Maven","fixed":["2.9.10.7"],"introduced":["2.7.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":null,"source":"GHSA-5949-rw7g-wx7w"},{"ecosystem":"Maven","fixed":["2.9.10.7"],"introduced":["2.7.0"],"last_affected":[],"package":"com.fasterxml.jackson.core:jackson-databind","purl":"pkg:maven/com.fasterxml.jackson.core/jackson-databind","source":"GHSA-5949-rw7g-wx7w"}],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-20189"},"products":["jackson-databind"],"published":"2021-01-19","related":[{"cvss_score":9.8,"headline":"Improper Restriction of XML External Entity Reference in Apache NiFi","id":"CVE-2018-1309","kev_date_added":null,"published":"2018-05-23"},{"cvss_score":9.8,"headline":"Apache NiFi XSS issue in context path handling","id":"CVE-2017-15697","kev_date_added":null,"published":"2018-01-23"},{"cvss_score":9.8,"headline":"Injection in Apache NiFi","id":"CVE-2017-5636","kev_date_added":null,"published":"2017-10-19"},{"cvss_score":8.8,"headline":"Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests","id":"CVE-2026-68981","kev_date_added":null,"published":"2026-08-03"},{"cvss_score":8.8,"headline":"Apache NiFi: Potential Code Injection with Properties Referencing Remote Resources","id":"CVE-2023-36542","kev_date_added":null,"published":"2023-07-29"},{"cvss_score":8.8,"headline":"Apache NiFi: Potential Code Injection with Database Services using H2","id":"CVE-2023-34468","kev_date_added":null,"published":"2023-06-12"},{"cvss_score":8.8,"headline":"Improper Neutralization of Command Elements in Shell User Group Provider","id":"CVE-2022-33140","kev_date_added":null,"published":"2022-06-15"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-08-27","vendors":["n/a"]},"summary":"Attackers can exploit unsafe deserialization in jackson-databind to execute arbitrary code or cause denial of service.","url":"https://insights.sbomify.com/CVE-2021-20190/"}