CVE-2026-82432: Incorrect Authorization

Description Nimbus validated topology.blobstore.map against the calling subject at submission time only. The rebalance operation accepts configuration overrides and stripped a small set of keys from them, but never re-ran that validation, so a caller authorised to rebalance a topology could...

CVE-2026-82427: Improper Limitation of a Pathname to a Restricted Directory

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...