{"id":"CVE-2026-83525","state":"PUBLISHED","title":"Apache Kafka: Incorrect boolean operator in FetchSnapshot RPC handler allows authenticated network clients to crash the KRaft controller via a malformed request.","description":"Incorrect operator (CWE-480) in the FetchSnapshot RPC handler\nin Apache Kafka from 2.8.0 before 4.2.2, and from 4.3.0 before 4.3.2\non all platforms allows an authenticated attacker with\nCLUSTER_ACTION privilege to cause a denial of service\n(controller process termination) via a crafted\nFetchSnapshotRequest with an empty topics array or a topic\nwith no partitions.\n\nUsers are recommended to upgrade to version 4.2.2, 4.3.2, or\n4.4.0, which fix this issue. Users on unsupported branches\n(4.1.x and earlier) should upgrade to 4.2.2 or later.","publishedAt":"2026-10-28T16:37:19.893Z","updatedAt":"2026-10-28T20:07:03.066Z","severity":null,"assigner":"apache","products":["Apache Software Foundation Apache Kafka"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Kafka","packageName":"org.apache.kafka:kafka-raft","packageURL":"pkg:maven/org.apache.kafka/kafka-raft","defaultStatus":"unaffected","versions":[{"version":"2.8.0","status":"affected","lessThan":"4.2.2","versionType":"semver"},{"version":"4.3.0","status":"affected","lessThan":"4.3.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":["https://github.com/apache/kafka/pull/23185","https://kafka.apache.org/cve-list","http://www.openwall.com/lists/oss-security/2026/10/28/7"],"weaknesses":["CWE-480"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/83xxx/CVE-2026-83525.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-83525","state":"PUBLISHED","datePublished":"2026-10-28T16:37:19.893Z","dateUpdated":"2026-10-28T20:07:03.066Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-08-31T16:02:13.499Z"},"containers":{"cna":{"title":"Apache Kafka: Incorrect boolean operator in FetchSnapshot RPC handler allows authenticated network clients to crash the KRaft controller via a malformed request.","descriptions":[{"lang":"en","value":"Incorrect operator (CWE-480) in the FetchSnapshot RPC handler\nin Apache Kafka from 2.8.0 before 4.2.2, and from 4.3.0 before 4.3.2\non all platforms allows an authenticated attacker with\nCLUSTER_ACTION privilege to cause a denial of service\n(controller process termination) via a crafted\nFetchSnapshotRequest with an empty topics array or a topic\nwith no partitions.\n\nUsers are recommended to upgrade to version 4.2.2, 4.3.2, or\n4.4.0, which fix this issue. Users on unsupported branches\n(4.1.x and earlier) should upgrade to 4.2.2 or later."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Kafka","packageName":"org.apache.kafka:kafka-raft","packageURL":"pkg:maven/org.apache.kafka/kafka-raft","defaultStatus":"unaffected","versions":[{"version":"2.8.0","status":"affected","lessThan":"4.2.2","versionType":"semver"},{"version":"4.3.0","status":"affected","lessThan":"4.3.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":[{"url":"https://github.com/apache/kafka/pull/23185","tags":["patch"]},{"url":"https://kafka.apache.org/cve-list","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"low"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-480","description":"CWE-480 Use of incorrect operator","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-10-28T16:37:19.893Z"},"source":{"discovery":"EXTERNAL"},"credits":[{"lang":"en","value":"Mike Read (GitHub: Michael-JRead)","type":"reporter"},{"lang":"en","value":"Kevin Wu <kwu@confluent.io>","type":"remediation developer"}],"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/10/28/7"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-10-28T20:07:03.066Z"}}]}}}