{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82441 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82441 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82441 is a critical missing authorization vulnerability in Apache Storm Nimbus, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82441 and fix it if it is affected.\n\nWhat it is: CVE-2026-82441 is a critical missing authorization vulnerability in Apache Storm Nimbus, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-82441 in the wild and no public exploit code.\n\nAffected product: Apache Storm Nimbus. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-82441/ (Markdown: https://insights.sbomify.com/CVE-2026-82441/index.md)","id":"CVE-2026-82441","markdown":"https://insights.sbomify.com/CVE-2026-82441/index.md","name":"CVE-2026-82441","record":{"aliases":["GHSA-5978-3w53-3qhw"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Storm Nimbus","requires_auth":"none","summary":"Attackers can delete other tenants' blobs or cause cluster-wide denial of service by submitting topologies with unvalidated dependency keys.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Description\n\nA submitted topology carries two lists of blobstore keys, `dependency_jars` and `dependency_artifacts`,\nwhich the client fills in after uploading the corresponding blobs. Nimbus performed no validation of their\ncontents on the submission path, yet acts on them in two places.\n\nDuring cleanup of a finished topology, Nimbus deletes the keys named in those lists, and the deletion is\nperformed as the Nimbus subject, for which the blobstore short-circuits its ACL check. A submitter who\nlisted a key belonging to another topology, such as its `-stormjar.jar`, could therefore cause\nthat blob to be deleted when their own topology was cleaned up.\n\nSeparately, on acquiring leadership a Nimbus compares the dependency keys of all active topologies against\nthe blobstore contents and surrenders leadership if any is missing. A single key that does not exist, on a\nsingle active topology, therefore causes every Nimbus to acquire leadership, surrender it and requeue\nindefinitely, leaving the cluster without a leader and unable to schedule, clean up or accept submissions.\n\nMitigation\n\nUpgrade to 3.1.0, where a submission is refused unless every entry in both lists is a dependency blob key\nand exists in the blobstore.\n\nNote that this validates new submissions only; a topology stored by an affected version with an invalid list\nis unaffected by the upgrade. An operator whose cluster is failing to retain a leader should inspect the\nNimbus log for the dependency keys reported as missing and remove or resubmit the topology naming them.\n\nUsers who cannot upgrade immediately should restrict topology submission to trusted principals.\n\nCredit\n\nThis issue was discovered by rzo1 while investigating an unrelated blobstore defect.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Apache Storm Nimbus: Cross-Tenant Blob Deletion and Cluster Denial of Service via Unvalidated Topology Dependency Keys","id":"CVE-2026-82441","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Adobe Campaign Classic (ACC) | Server-Side Request Forgery (SSRF) (CWE-918)","id":"CVE-2026-82443"},"packages":[],"prev":{"headline":"Apache Storm DRPC: Unauthenticated Unbounded Memory Growth in DRPC","id":"CVE-2026-82439"},"products":["Apache Storm Nimbus"],"published":"2026-09-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["Apache Software Foundation"]},"summary":"Attackers can delete other tenants' blobs or cause cluster-wide denial of service by submitting topologies with unvalidated dependency keys.","url":"https://insights.sbomify.com/CVE-2026-82441/"}