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              "value": "\u003cp\u003e\u003cb\u003eDeserialization of Untrusted Data vulnerability in Apache Storm.\u003c/b\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eVersions Affected:\u003c/strong\u003e\nbefore 2.8.6.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eDescription:\u003c/strong\u003e\nWhen processing topology credentials submitted via the Nimbus Thrift API, Storm deserializes the base64-encoded TGT blob using \u003ccode\u003eObjectInputStream.readObject()\u003c/code\u003e without any class filtering or validation.\u0026nbsp;An authenticated user with topology submission rights could supply a crafted serialized object in the \u003ccode\u003e\"TGT\"\u003c/code\u003e credential field, leading to remote code execution in both the Nimbus and Worker JVMs.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMitigation:\u003c/strong\u003e\n2.x users should upgrade to 2.8.6.\u003c/p\u003e\n\u003cp\u003eUsers who cannot upgrade immediately should monkey-patch an \u003ccode\u003eObjectInputFilter\u003c/code\u003e allow-list to \u003ccode\u003eClientAuthUtils.deserializeKerberosTicket()\u003c/code\u003e restricting deserialized classes to \u003ccode\u003ejavax.security.auth.kerberos.KerberosTicket\u003c/code\u003e and its known dependencies. A guide on how to do this is available in the release notes of 2.8.6.\u003c/p\u003e\u003cp\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cb\u003eCredit:\u003c/b\u003e This issue was discovered by K.\u003c/span\u003e\u003cbr\u003e\u003c/p\u003e"
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          "url": "https://storm.apache.org/2026/04/12/storm286-released.html"
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      "title": "Apache Storm Client: RCE through Unsafe Deserialization via Kerberos TGT Credential Handling",
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