Answer in brief
CVE-2026-81303 records a Medium severity (CVSS 6.3) vulnerability in Hawtio-operator: hawtio-operator: routes/custom-host confused-deputy via spec.routehostname. The current sources do not mark it as known exploited. The current feed maps Red Hat/rhbac-4/hawtio-operator-bundle (generic), Red Hat/rhbac-4/hawtio-rhel9 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/rhbac-4/hawtio-operator-bundle (generic), Red Hat/rhbac-4/hawtio-rhel9 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/rhbac-4/hawtio-operator-bundlegeneric | * | Not reported |
| Red Hat/rhbac-4/hawtio-rhel9generic | * | Not reported |
Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 15, 2026
A flaw was found in hawtio-operator. The operator holds routes/custom-host:create permission cluster-wide and writes the tenant-supplied spec.routeHostName value from the Hawtio custom resource directly into the Route spec without validation or authorization checks. A namespace edit user, who normally cannot set custom Route hostnames, can use the operator as a confused deputy to claim arbitrary externally-routable hostnames, enabling subdomain takeover and, in combination with the auto-grant OAuthClient, OAuth redirect hijack.
Quoted source text, attributed separately from HOL analysis.