{"action":"Upgrade org.apache.hadoop:hadoop-hdfs-native-client to 3.4.2 or later.","affected":[{"fixed":"3.4.2","introduced":"3.2.0"}],"component":"org.apache.hadoop:hadoop-hdfs-native-client","cve_ids":["CVE-2025-27821"],"ecosystem":"Maven","epss":0.00906,"exploited":false,"fixed_versions":["3.4.2"],"ghsa_id":"GHSA-92cc-952p-v8rh","id":"tcs_01M5N8NTJCK5FZ3KX41SBQWQHY","modified_at":"2026-02-03T03:07:43.476697Z","published_at":"2026-01-26T12:30:27Z","references":["https://osv.dev/vulnerability/GHSA-92cc-952p-v8rh","https://nvd.nist.gov/vuln/detail/CVE-2025-27821","https://github.com/apache/hadoop/pull/7481","https://github.com/apache/hadoop/commit/2b32e46f666c7645f5d1e026be3982b99319ccb8","https://github.com/apache/hadoop","https://issues.apache.org/jira/browse/HDFS-17754","https://lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh","http://www.openwall.com/lists/oss-security/2026/01/23/7"],"severity":{"label":"high","score":7.3},"sources":[{"source":"osv","source_id":"GHSA-92cc-952p-v8rh","url":"https://osv.dev/vulnerability/GHSA-92cc-952p-v8rh"}],"summary":"Apache Hadoop HDFS Native Client has Out-of-bounds Write Vulnerability"}