{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83525", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-08-31T16:02:13.499Z", "datePublished": "2026-10-28T16:37:19.893Z", "dateUpdated": "2026-10-28T16:37:19.893Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-28T16:37:19.893Z"}, "title": "Apache Kafka: Incorrect boolean operator in FetchSnapshot RPC handler allows authenticated network clients to crash the KRaft controller via a malformed request.", "problemTypes": [{"descriptions": [{"description": "CWE-480 Use of incorrect operator", "lang": "en", "cweId": "CWE-480", "type": "CWE"}]}], "source": {"discovery": "EXTERNAL"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Kafka", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.kafka:kafka-raft", "packageURL": "pkg:maven/org.apache.kafka/kafka-raft", "versions": [{"status": "affected", "version": "2.8.0", "lessThan": "4.2.2", "versionType": "semver"}, {"status": "affected", "version": "4.3.0", "lessThan": "4.3.2", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"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.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Incorrect operator (CWE-480) in the FetchSnapshot RPC handler<br>in Apache Kafka from 2.8.0 before 4.2.2, and from 4.3.0 before 4.3.2<br>on all platforms allows an authenticated attacker with<br>CLUSTER_ACTION privilege to cause a denial of service<br>(controller process termination) via a crafted<br>FetchSnapshotRequest with an empty topics array or a topic<br>with no partitions.<br><br>Users are recommended to upgrade to version 4.2.2, 4.3.2, or<br>4.4.0, which fix this issue. Users on unsupported branches<br>(4.1.x and earlier) should upgrade to 4.2.2 or later."}]}], "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"}]}], "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"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.kafka:kafka-raft", "packageURL": "pkg:maven/org.apache.kafka/kafka-raft", "product": "Apache Kafka", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "4.2.2", "status": "affected", "version": "2.8.0", "versionType": "semver"}, {"lessThan": "4.3.2", "status": "affected", "version": "4.3.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "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."}], "id": "CVE-2026-83525", "lastModified": "2026-10-28T17:18:43.983", "metrics": {}, "published": "2026-10-28T17:18:43.983", "references": [{"source": "security@apache.org", "url": "https://github.com/apache/kafka/pull/23185"}, {"source": "security@apache.org", "url": "https://kafka.apache.org/cve-list"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-480"}], "source": "security@apache.org", "type": "Primary"}]}

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