CVE-2026-81303 MEDIUM

CVE-2026-81303: Hawtio-operator: hawtio-operator: routes/custom-host confused-deputy via spec.routehostname

Vendor Red Hat
Product Red Hat build of Apache Camel - HawtIO 4
Weakness CWE-441
Published September 15, 2026
Last update September 15, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 15, 2026 CVE published
September 15, 2026 Record updated