{"cve":"CVE-2026-35337","nvd":{"published":"2026-04-13T10:16:11.610","modified":"2026-10-26T22:10:00.163","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-502"],"references":["https://storm.apache.org/2026/04/12/storm286-released.html","http://www.openwall.com/lists/oss-security/2026/04/12/6"],"products":["apache:storm"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-35337","score":0.01011,"percentile":0.62929,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-jf89-3q6q-vcgr","url":"https://osv.dev/vulnerability/GHSA-jf89-3q6q-vcgr","summary":"Apache Storm: Deserialization of Untrusted Data vulnerability","modified":"2026-04-14T23:11:26.035032Z","packages":[{"ecosystem":"Maven","name":"org.apache.storm:storm-client","purl":"pkg:maven/org.apache.storm/storm-client","ranges":["<2.8.6"],"fixed":["2.8.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}