CVE-2026-82427 Apache Storm Nimbus: Path Traversal as the Supervisor User via Unsanitised Blobstore Map Local Name

Description A topology's topology.blobstore.map lets the submitter choose a local name for each blob that the supervisor localises. That name was used to build a path under the topology's working directory without normalisation, in both AsyncLocalizer and Container.createBlobstoreLinks, and the...

CVE-2026-82427

Apache Storm is vulnerable to a path traversal flaw in the Nimbus component. A submitter can provide a topology.blobstore.map containing unsanitized names with ../ segments. Because AsyncLocalizer and Container.createBlobstoreLinks fail to normalize these paths, a submitter can trigger the symlin...