{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82436", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-08-29T10:33:24.250Z", "datePublished": "2026-11-09T10:03:06.809Z", "dateUpdated": "2026-11-09T10:13:14.284Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-11-09T10:03:06.809Z"}, "title": "Apache Storm Client: Deserialization of Untrusted Data from the State Store", "problemTypes": [{"descriptions": [{"description": "CWE-502 Deserialization of untrusted data", "lang": "en", "cweId": "CWE-502", "type": "CWE"}]}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Storm Client", "packageURL": "pkg:maven/org.apache.storm/storm-client", "versions": [{"status": "affected", "version": "3.0.0", "lessThan": "3.1.0", "versionType": "semver"}], "defaultStatus": "unaffected", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.storm:storm-client"}], "descriptions": [{"value": "Description\n\n`DefaultStateSerializer`, used to persist and restore stateful bolt checkpoints, configured Kryo with class\nregistration disabled and an instantiation strategy that constructs objects without invoking their\nconstructors, then deserialized whatever bytes the state store returned. A party able to write to the\ntopology's keyspace in the state store, for example a co-tenant of a shared Redis instance or anyone with\nnetwork access to it, could therefore place a serialized object graph that executes code inside the worker\nJVM when the state is restored.\n\nThis requires the Redis-backed state provider, which is not the default. Write access to a state-store key\nis a data-plane privilege; code execution in the worker JVM is not, so the two are not equivalent.\n\nMitigation\n\nUpgrade to 3.1.0, where the state serializer requires registered classes.\n\nNote that this is a behaviour change for existing state: checkpoints written by an affected version may fail\nto restore, and a migration step may be required. Users who cannot upgrade immediately should restrict\nnetwork and credential access to the state store to the cluster itself.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<b>Description</b><br><br>`DefaultStateSerializer`, used to persist and restore stateful bolt checkpoints, configured Kryo with class<br>registration disabled and an instantiation strategy that constructs objects without invoking their<br>constructors, then deserialized whatever bytes the state store returned. A party able to write to the<br>topology's keyspace in the state store, for example a co-tenant of a shared Redis instance or anyone with<br>network access to it, could therefore place a serialized object graph that executes code inside the worker<br>JVM when the state is restored.<br><br>This requires the Redis-backed state provider, which is not the default. Write access to a state-store key<br>is a data-plane privilege; code execution in the worker JVM is not, so the two are not equivalent.<br><br><b>Mitigation</b><br><br>Upgrade to 3.1.0, where the state serializer requires registered classes.<br><br>Note that this is a behaviour change for existing state: checkpoints written by an affected version may fail<br>to restore, and a migration step may be required. Users who cannot upgrade immediately should restrict<br>network and credential access to the state store to the cluster itself.<br><br><b>Credit</b><br><br>The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.<br>"}]}], "references": [{"url": "https://lists.apache.org/thread.html/q5vqclkjdvngwkffcbwbwyym410sp8sc", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "important"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "The ASF using Claude Agents", "type": "finder"}], "x_generator": {"engine": "Vulnogram 1.0.3"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/11/09/1"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-11-09T10:13:14.284Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.storm:storm-client", "packageURL": "pkg:maven/org.apache.storm/storm-client", "product": "Apache Storm Client", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "3.1.0", "status": "affected", "version": "3.0.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Description\n\n`DefaultStateSerializer`, used to persist and restore stateful bolt checkpoints, configured Kryo with class\nregistration disabled and an instantiation strategy that constructs objects without invoking their\nconstructors, then deserialized whatever bytes the state store returned. A party able to write to the\ntopology's keyspace in the state store, for example a co-tenant of a shared Redis instance or anyone with\nnetwork access to it, could therefore place a serialized object graph that executes code inside the worker\nJVM when the state is restored.\n\nThis requires the Redis-backed state provider, which is not the default. Write access to a state-store key\nis a data-plane privilege; code execution in the worker JVM is not, so the two are not equivalent.\n\nMitigation\n\nUpgrade to 3.1.0, where the state serializer requires registered classes.\n\nNote that this is a behaviour change for existing state: checkpoints written by an affected version may fail\nto restore, and a migration step may be required. Users who cannot upgrade immediately should restrict\nnetwork and credential access to the state store to the cluster itself.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm."}], "id": "CVE-2026-82436", "lastModified": "2026-11-09T10:17:11.633", "metrics": {}, "published": "2026-11-09T10:17:11.633", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/q5vqclkjdvngwkffcbwbwyym410sp8sc"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security@apache.org", "type": "Primary"}]}

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