CVE-2026-82561

Apache NiFi versions 1.5.0 through 2.11.0 contain a missing authorization flaw in REST API methods used for Process Group flow replacement and versioned flow update/rebase operations. These methods only checked read/write permissions on the Process Group itself, unlike their asynchronous counterp...

CVE-2026-82561: Missing Authorization

Apache NiFi 1.5.0 through 2.11.0 provide REST API methods that replace the entire contents of a Process Group using a client-supplied flow definition, covering Process Group flow replacement together with versioned flow update and rebase operations. Framework authorization for these methods was...