{"answers":{"affected":"2 open source packages ship an affected version, including org.apache.storm:storm-client. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-35337 in the wild and no public exploit code.","fix":"Upgrade org.apache.storm:storm-client to 2.8.6 or later.","what":"CVE-2026-35337 is a high-severity unsafe deserialization vulnerability in Apache Storm Client, published on 13 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-35337 and fix it if it is affected.\n\nWhat it is: CVE-2026-35337 is a high-severity unsafe deserialization vulnerability in Apache Storm Client, published on 13 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-35337 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.storm:storm-client (Maven): affected all versions; fixed in 2.8.6\n- org.apache.storm:storm-client (Maven): affected all versions; fixed in 2.8.6\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-35337/ (Markdown: https://insights.sbomify.com/CVE-2026-35337/index.md)","id":"CVE-2026-35337","markdown":"https://insights.sbomify.com/CVE-2026-35337/index.md","name":"CVE-2026-35337","record":{"aliases":["GHSA-jf89-3q6q-vcgr"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Storm Client","requires_auth":"low_privilege","summary":"Authenticated attackers can achieve remote code execution in Nimbus and Worker JVMs by submitting malicious serialized objects via the Kerberos TGT credential field.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"storm","vendor":"apache"}],"cvss":{"score":8.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Deserialization of Untrusted Data vulnerability in Apache Storm.\n\nVersions Affected:\nbefore 2.8.6.\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\nMitigation:\n2.x users should upgrade to 2.8.6.\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.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Apache Storm Client: RCE through Unsafe Deserialization via Kerberos TGT Credential Handling","id":"CVE-2026-35337","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"uutils coreutils chmod Path Traversal Bypass of --preserve-root","id":"CVE-2026-35338"},"packages":[{"ecosystem":"Maven","fixed":["2.8.6"],"introduced":["0"],"last_affected":[],"package":"org.apache.storm:storm-client","purl":null,"source":"GHSA-jf89-3q6q-vcgr"},{"ecosystem":"Maven","fixed":["2.8.6"],"introduced":["0"],"last_affected":[],"package":"org.apache.storm:storm-client","purl":"pkg:maven/org.apache.storm/storm-client","source":"GHSA-jf89-3q6q-vcgr"}],"prev":{"headline":"Missing authorization in Oracle WebCenter Content","id":"CVE-2026-35327"},"products":["Apache Storm Client"],"published":"2026-04-13","related":[{"cvss_score":9.8,"headline":"Shell Command Injection Vulnerability in Nimbus Thrift Server","id":"CVE-2021-38294","kev_date_added":null,"published":"2021-10-25"},{"cvss_score":9.8,"headline":"Unsafe Pre-Authentication Deserialization In Workers","id":"CVE-2021-40865","kev_date_added":null,"published":"2021-10-25"},{"cvss_score":9.8,"headline":"Deserialization of Untrusted Data in Apache Storm","id":"CVE-2018-11779","kev_date_added":null,"published":"2019-07-25"},{"cvss_score":9.8,"headline":"Apache Storm remote code execution vulnerability","id":"CVE-2015-3188","kev_date_added":null,"published":"2017-01-13"},{"cvss_score":8.8,"headline":"Code execution in org.apache.storm:storm-core","id":"CVE-2018-1331","kev_date_added":null,"published":"2018-07-10"},{"cvss_score":8.8,"headline":"Apache Storm it is possible for the owner of a topology to trick the supervisor to launch a worker as a different, non-root, user","id":"CVE-2017-9799","kev_date_added":null,"published":"2017-08-09"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-14","vendors":["Apache Software Foundation"]},"summary":"Authenticated attackers can achieve remote code execution in Nimbus and Worker JVMs by submitting malicious serialized objects via the Kerberos TGT credential field.","url":"https://insights.sbomify.com/CVE-2026-35337/"}