{"answers":{"affected":"2 open source packages ship an affected version, including org.apache.hadoop:hadoop-hdfs-native-client. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-27821 in the wild and no public exploit code.","fix":"Upgrade org.apache.hadoop:hadoop-hdfs-native-client to 3.4.2 or later.","what":"CVE-2025-27821 is a high-severity memory corruption vulnerability in Apache Software Foundation HDFS native client, published on 26 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-27821 and fix it if it is affected.\n\nWhat it is: CVE-2025-27821 is a high-severity memory corruption vulnerability in Apache Software Foundation HDFS native client, published on 26 Jan 2026. 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-2025-27821 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.hadoop:hadoop-hdfs-native-client (Maven): affected from 3.2.0; fixed in 3.4.2\n- org.apache.hadoop:hadoop-hdfs-native-client (Maven): affected from 3.2.0; fixed in 3.4.2\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-2025-27821/ (Markdown: https://insights.sbomify.com/CVE-2025-27821/index.md)","id":"CVE-2025-27821","markdown":"https://insights.sbomify.com/CVE-2025-27821/index.md","name":"CVE-2025-27821","record":{"aliases":["CLEANSTART-2026-HK83205","GHSA-92cc-952p-v8rh"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Hadoop HDFS native client","requires_auth":"none","summary":"An out-of-bounds write in the HDFS native client URI parser allows attackers to potentially execute code or cause denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"hadoop","vendor":"apache"}],"cvss":{"score":7.3,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"Out-of-bounds Write vulnerability in Apache Hadoop HDFS native client.\n\nThis issue affects Apache Hadoop: from 3.2.0 before 3.4.2.\n\nUsers are recommended to upgrade to version 3.4.2, which fixes the issue.","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":"HDFS native client: Out of bounds write in URI parser of native HDFS client","id":"CVE-2025-27821","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":2,"n_references":1,"next":{"headline":"Privilege escalation in Masquerade","id":"CVE-2025-27822"},"packages":[{"ecosystem":"Maven","fixed":["3.4.2"],"introduced":["3.2.0"],"last_affected":[],"package":"org.apache.hadoop:hadoop-hdfs-native-client","purl":null,"source":"GHSA-92cc-952p-v8rh"},{"ecosystem":"Maven","fixed":["3.4.2"],"introduced":["3.2.0"],"last_affected":[],"package":"org.apache.hadoop:hadoop-hdfs-native-client","purl":"pkg:maven/org.apache.hadoop/hadoop-hdfs-native-client","source":"GHSA-92cc-952p-v8rh"}],"prev":{"headline":"Apache HttpComponents: PSL (Public Suffix List) validation bypass","id":"CVE-2025-27820"},"products":["HDFS native client"],"published":"2026-01-26","related":[{"cvss_score":9.8,"headline":"Command injection in org.apache.hadoop.fs.FileUtil.unTarUsingTar","id":"CVE-2022-25168","kev_date_added":null,"published":"2022-08-04"},{"cvss_score":9.8,"headline":"Heap buffer overflow in libhdfs native library","id":"CVE-2021-37404","kev_date_added":null,"published":"2022-06-13"},{"cvss_score":9.8,"headline":"Arbitrary file write in FileUtil#unpackEntries on Windows","id":"CVE-2022-26612","kev_date_added":null,"published":"2022-04-07"},{"cvss_score":9.8,"headline":"Improper Check for Unusual or Exceptional Conditions in Connect2id Nimbus JOSE+JWT","id":"CVE-2019-17195","kev_date_added":null,"published":"2019-10-15"},{"cvss_score":9.8,"headline":"Exposure of Sensitive Information in Hadoop","id":"CVE-2017-15718","kev_date_added":null,"published":"2018-01-24"},{"cvss_score":9.8,"headline":"Use of a Broken or Risky Cryptographic Algorithm in Apache Hadoop","id":"CVE-2012-4449","kev_date_added":null,"published":"2017-10-30"},{"cvss_score":9.8,"headline":"Exposure of Sensitive Information to an Unauthorized Actor in Apache Hadoop","id":"CVE-2016-3086","kev_date_added":null,"published":"2017-09-05"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-01-26","vendors":["Apache Software Foundation"]},"summary":"An out-of-bounds write in the HDFS native client URI parser allows attackers to potentially execute code or cause denial of service.","url":"https://insights.sbomify.com/CVE-2025-27821/"}