{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82432 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82432 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82432 is a high-severity missing authorization vulnerability in Apache Storm Nimbus, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82432 and fix it if it is affected.\n\nWhat it is: CVE-2026-82432 is a high-severity missing authorization vulnerability in Apache Storm Nimbus, published on 14 Sep 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-2026-82432 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-2026-82432/ (Markdown: https://insights.sbomify.com/CVE-2026-82432/index.md)","id":"CVE-2026-82432","markdown":"https://insights.sbomify.com/CVE-2026-82432/index.md","name":"CVE-2026-82432","record":{"aliases":["GHSA-hw7r-wm97-cf8j"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Storm Nimbus","requires_auth":"low_privilege","summary":"Attackers can bypass blobstore authorization via rebalance overrides or list all blobs, exposing sensitive data in Apache Storm Nimbus.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Description\n\nNimbus validated `topology.blobstore.map` against the calling subject at submission time only. The rebalance\noperation accepts configuration overrides and stripped a small set of keys from them, but never re-ran that\nvalidation, so a caller authorised to rebalance a topology could introduce a blobstore map entry naming a\nblob whose ACL does not grant them access. Supervisors localise whatever key the map names, placing the\nblob's contents into the topology's working directory.\n\nThe same advisory covers `listBlobs`, which performed no authorization check and passed no subject, unlike\nthe neighbouring `getBlobMeta` and `beginBlobDownload` operations. It therefore returned every key in the\nblobstore to any caller able to reach the Nimbus Thrift port, which provides the key names that make the\nabove practical. On its own the disclosure is metadata only.\n\nMitigation\n\nUpgrade to 3.1.0, where rebalance configuration overrides are validated exactly as submission-time\nconfiguration is, against the rebalancing caller, and where `listBlobs` applies the configured\nauthorization.\n\nUsers who cannot upgrade immediately should restrict rebalance rights to trusted principals, keeping in mind\nthat membership of a topology's `topology.users` or `topology.groups` confers them.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.","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: Blobstore Authorization Bypass via Rebalance Configuration Overrides","id":"CVE-2026-82432","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":"Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Daemon Configuration via Nimbus and the UI","id":"CVE-2026-82433"},"packages":[],"prev":{"headline":"Apache Storm Client: Authorization Bypass When nimbus.groups Is Configured Without nimbus.users","id":"CVE-2026-82431"},"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["Apache Software Foundation"]},"summary":"Attackers can bypass blobstore authorization via rebalance overrides or list all blobs, exposing sensitive data in Apache Storm Nimbus.","url":"https://insights.sbomify.com/CVE-2026-82432/"}