Medium [CVE-2026-81303] Hawtio-operator: hawtio-operator: routes/custom-host confused-deputy via spec.routehostname
This medium-severity Red Hat Linux advisory covers CVE-2026-81303 affecting Red Hat build of Apache Camel - HawtIO 4.
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Summary
A flaw was found in hawtio-operator. 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.
A user with permission to create Hawtio CRs in their namespace can set an arbitrary hostname belonging to another tenant or domain, resulting in a confused-deputy attack. This can lead to subdomain takeover and, when chained with other flaws, potential OAuth token theft via redirect manipulation.
Red Hat severity: Moderate — CVSS 6.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N). Weakness: CWE-441.
Affected Red Hat products: Red Hat build of Apache Camel - HawtIO 4. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Administrators can mitigate this issue by restricting which users can create or modify Hawtio custom resources using RBAC policies. Additionally, OpenShift admins can configure the router to use route admission policies that reject Routes claiming hostnames outside of allowed domain patterns. Review existing Hawtio CR instances for unexpected routeHostName values.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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