What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-15 · updated 2026-09-16
• Weakness: CWE-441

Description

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.

Affected products

• Red Hat build of Apache Camel - HawtIO 4: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-81303
• https://bugzilla.redhat.com/show_bug.cgi?id=2524897

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