{"api_version":"1","generated_at":"2026-04-22T16:06:29+00:00","cve":"CVE-2026-35337","urls":{"html":"https://cve.report/CVE-2026-35337","api":"https://cve.report/api/cve/CVE-2026-35337.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-35337","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-35337"},"summary":{"title":"Apache Storm Client: RCE through Unsafe Deserialization via Kerberos TGT Credential Handling","description":"Deserialization of Untrusted Data vulnerability in Apache Storm.\n\nVersions Affected:\nbefore 2.8.6.\n\n\nDescription:\nWhen processing topology credentials submitted via the Nimbus Thrift API, Storm deserializes the base64-encoded TGT blob using ObjectInputStream.readObject() without any class filtering or validation. An authenticated user with topology submission rights could supply a crafted serialized object in the \"TGT\" credential field, leading to remote code execution in both the Nimbus and Worker JVMs.\n\n\nMitigation:\n2.x users should upgrade to 2.8.6.\n\n\nUsers who cannot upgrade immediately should monkey-patch an ObjectInputFilter allow-list to ClientAuthUtils.deserializeKerberosTicket() restricting deserialized classes to javax.security.auth.kerberos.KerberosTicket and its known dependencies. A guide on how to do this is available in the release notes of 2.8.6.\n\nCredit: This issue was discovered by K.","state":"PUBLISHED","assigner":"apache","published_at":"2026-04-13 10:16:11","updated_at":"2026-04-15 15:54:21"},"problem_types":["CWE-502","CWE-502 CWE-502 Deserialization of Untrusted 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A guide on how to do this is available in the release notes of 2.8.6.</p><p><span style=\"background-color: rgb(255, 255, 255);\"><b>Credit:</b> This issue was discovered by K.</span><br></p>"}],"value":"Deserialization of Untrusted Data vulnerability in Apache Storm.\n\nVersions Affected:\nbefore 2.8.6.\n\n\nDescription:\nWhen processing topology credentials submitted via the Nimbus Thrift API, Storm deserializes the base64-encoded TGT blob using ObjectInputStream.readObject() without any class filtering or validation. An authenticated user with topology submission rights could supply a crafted serialized object in the \"TGT\" credential field, leading to remote code execution in both the Nimbus and Worker JVMs.\n\n\nMitigation:\n2.x users should upgrade to 2.8.6.\n\n\nUsers who cannot upgrade immediately should monkey-patch an ObjectInputFilter allow-list to ClientAuthUtils.deserializeKerberosTicket() restricting deserialized classes to javax.security.auth.kerberos.KerberosTicket and its known dependencies. A guide on how to do this is available in the release notes of 2.8.6.\n\nCredit: This issue was discovered by K."}],"metrics":[{"other":{"content":{"text":"important"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-13T09:11:06.193Z","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache"},"references":[{"tags":["vendor-advisory"],"url":"https://storm.apache.org/2026/04/12/storm286-released.html"}],"source":{"discovery":"EXTERNAL"},"title":"Apache Storm Client: RCE through Unsafe Deserialization via Kerberos TGT Credential Handling","x_generator":{"engine":"Vulnogram 0.2.0"}}},"cveMetadata":{"assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","assignerShortName":"apache","cveId":"CVE-2026-35337","datePublished":"2026-04-13T09:11:06.193Z","dateReserved":"2026-04-02T09:21:36.185Z","dateUpdated":"2026-04-14T03:55:31.489Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-13 10:16:11","lastModifiedDate":"2026-04-15 15:54:21","problem_types":["CWE-502","CWE-502 CWE-502 Deserialization of Untrusted Data"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apache:storm:*:*:*:*:*:*:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.8.6","matchCriteriaId":"52FAF08F-1AE5-4EC5-BBA7-393B88FC8AD1"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"35337","Ordinal":"1","Title":"Apache Storm Client: RCE through Unsafe Deserialization via Kerb","CVE":"CVE-2026-35337","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"35337","Ordinal":"1","NoteData":"Deserialization of Untrusted Data vulnerability in Apache Storm.\n\nVersions Affected:\nbefore 2.8.6.\n\n\nDescription:\nWhen processing topology credentials submitted via the Nimbus Thrift API, Storm deserializes the base64-encoded TGT blob using ObjectInputStream.readObject() without any class filtering or validation. An authenticated user with topology submission rights could supply a crafted serialized object in the \"TGT\" credential field, leading to remote code execution in both the Nimbus and Worker JVMs.\n\n\nMitigation:\n2.x users should upgrade to 2.8.6.\n\n\nUsers who cannot upgrade immediately should monkey-patch an ObjectInputFilter allow-list to ClientAuthUtils.deserializeKerberosTicket() restricting deserialized classes to javax.security.auth.kerberos.KerberosTicket and its known dependencies. A guide on how to do this is available in the release notes of 2.8.6.\n\nCredit: This issue was discovered by K.","Type":"Description","Title":"Apache Storm Client: RCE through Unsafe Deserialization via Kerb"}]}}}