{"id":"CVE-2026-81303","title":"A flaw was found in hawtio-operator","summary":"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 valida…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","cwe":["CWE-441"],"vendor":"Red Hat","product":"rhbac-4/hawtio-operator-bundle","affected":["rhbac-4/hawtio-operator-bundle (all versions)","rhbac-4/hawtio-rhel9 (all versions)"],"published":"2026-09-15","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:42:43.623","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-81303","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-81303","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2524897","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81303.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-81303"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81303"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00273,"epssPercentile":0.1994,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-15T17:50:38.786528Z"},"ingestedAt":"2026-09-15T06:32:35.355Z","slug":"CVE-2026-81303","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat build of Apache Camel - HawtIO 4 · no fix planned: Red Hat build of Apache Camel - HawtIO 4 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81303.json)","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}