Subdomain Takeover Vulnerability in Hawtio Operator by Red Hat
CVE-2026-81303

6.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Apache Camel - Hawtio 4
Vendor
CVE Published:
15 September 2026

What is CVE-2026-81303?

A vulnerability exists in the Hawtio Operator that allows namespace edit users to leverage cluster-wide permissions associated with the operator. By doing so, they can claim arbitrary externally-routable hostnames through a lack of validation on the spec.routeHostName value input and circumventing standard authorization checks. This flaw potentially leads to subdomain takeovers and, when combined with the auto-grant OAuthClient feature, could result in unauthorized OAuth redirect hijacks, creating significant security risks for affected systems.

References

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

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.