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

Quick assessment

Affected
Red Hat Red Hat build of Apache Camel - HawtIO 4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

hawtio-operator 中存在一个缺陷。该操作符在整个集群范围内拥有 权限，并且直接将 Hawtio 自定义资源中由租户提供的 值写入 Route 规范中，且未进行任何验证或授权检查。通常情况下，命名空间的编辑者无法设置自定义 Route 主机名，但他们可以利用该操作符作为“混淆代理”（confused deputy），从而声明任意外部可路由的主机名。这可能导致子域名接管（subdomain takeover）漏洞，并结合自动授予的 OAuthClient 权限，进一步引发 OAuth 重定向劫持（OAut

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-81303

Vulnerability Information
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Vulnerability Title
Hawtio-operator: hawtio-operator: routes/custom-host confused-deputy via spec.routehostname
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Apache Camel - HawtIO 4 - cpe:/a:redhat:apache_camel_hawtio:4
Red Hat Red Hat build of Apache Camel - HawtIO 4 - cpe:/a:redhat:apache_camel_hawtio:4

II. Public POCs for CVE-2026-81303

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III. Intelligence Information for CVE-2026-81303

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Vendor Advisories for CVE-2026-81303 (1)

Other References for CVE-2026-81303 (1)

Same Patch Batch · Red Hat · 2026-09-15 · 4 CVEs total

CVE-2026-75092 7.3 HIGH Leapp-repository: leapp-upgrade-el9toel10: leapp-upgrade-el9toel10: scan_mysql runs mysqld
CVE-2026-91786 6.1 MEDIUM Gnome-shell: gnome-shell: out-of-bounds read in remote search icon rendering due to unvali
CVE-2026-81320 5.5 MEDIUM Hawtio-operator: hawtio-operator: tls private key written to operator log at debug level

IV. Related Vulnerabilities

Same product: Red Hat build of Apache Camel - HawtIO 4
Same vendor: Red Hat
Same weakness: CWE-441

V. Comments for CVE-2026-81303

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