{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82438 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82438 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82438 is a high-severity vulnerability in Apache Storm Webapp, 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-2026-82438 and fix it if it is affected.\n\nWhat it is: CVE-2026-82438 is a high-severity vulnerability in Apache Storm Webapp, 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-2026-82438 in the wild and no public exploit code.\n\nAffected product: Apache Storm Webapp. 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-2026-82438/ (Markdown: https://insights.sbomify.com/CVE-2026-82438/index.md)","id":"CVE-2026-82438","markdown":"https://insights.sbomify.com/CVE-2026-82438/index.md","name":"CVE-2026-82438","record":{"aliases":["GHSA-xf44-6rjp-v8cm"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Storm Webapp","requires_auth":"low_privilege","summary":"Authenticated Storm users can have cluster and log data read by malicious websites due to insecure CORS and JSONP configurations.","user_interaction":"not_required","vuln_class":"other"},"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-942","name":"Permissive Cross-domain Security Policy with Untrusted Domains"},{"id":"CWE-346","name":"Origin Validation Error"}],"description":"Description\n\nThree separate mechanisms allowed a web page on an unrelated origin to read responses that Storm's HTTP\ncomponents served to an authenticated user.\n\nThe Logviewer reflected the request's `Origin` header back in `Access-Control-Allow-Origin` while also\nsending `Access-Control-Allow-Credentials: true`. The published security model documents a permissive\n`Access-Control-Allow-Origin: *` posture as accepted, which is safe precisely because browsers refuse to\nhonour `*` together with credentials; reflecting the concrete origin removes that protection.\n\nThe shared CORS filter used by the UI, the Logviewer and DRPC was configured with a response header name\nwhere an initialisation parameter name was expected. The container ignored the setting and applied its own\ndefaults, which allow credentials.\n\nFinally, the UI and Logviewer wrapped API responses in a caller-supplied JSONP callback for every GET\nrequest. A script element on any origin can load such a response, which bypasses the same-origin policy\nentirely rather than negotiating it, and there was no way to turn the behaviour off.\n\nIn each case the effect is that a page visited by an authenticated operator can read cluster, topology and\nlog data on their behalf.\n\nMitigation\n\nUpgrade to 3.1.0, where the Logviewer no longer reflects the request origin in a credentialed response, the\nCORS filter is configured explicitly, and JSONP wrapping is governed by `ui.enable.jsonp`, which defaults to\nfalse.\n\nNote that disabling JSONP is a behaviour change for tooling that passes a `callback` query parameter; such\ntooling should be moved to ordinary JSON requests.\n\nUsers who cannot upgrade immediately should place the UI, Logviewer and DRPC HTTP endpoints behind a reverse\nproxy that strips `Access-Control-Allow-Origin` and `Access-Control-Allow-Credentials` from responses and\nrejects requests carrying a `callback` parameter.\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 Webapp: Authenticated API Responses Exposed to Arbitrary Web Origins","id":"CVE-2026-82438","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Storm DRPC: Unauthenticated Unbounded Memory Growth in DRPC","id":"CVE-2026-82439"},"packages":[],"prev":{"headline":"Apache Storm Logviewer: Log Access Controls Not Enforced by Logviewer","id":"CVE-2026-82437"},"products":["Apache Storm Webapp"],"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":"Authenticated Storm users can have cluster and log data read by malicious websites due to insecure CORS and JSONP configurations.","url":"https://insights.sbomify.com/CVE-2026-82438/"}