A flaw was found in the internal WebAssembly (WASM) shim used by the Kuadrant operator. When generating the CEL predicate that determines whether Gateway-level authentication and rate limiting should run, the shim does not correctly escape values from HTTPRoute match fields. A user who can create or modify an HTTPRoute attached to a shared Gateway can provide a crafted path, header, or query match value that causes the predicate to skip those checks. The request is still forwarded to the route’s backend.

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Fixes

Solution

No solution given by the vendor.


Workaround

Until a fixed release is available, restrict HTTPRoute creation and modification for routes attached to the shared Gateway, and review or remove routes with match values that trigger the predicate injection. Where possible, enforce authentication and rate limiting at the backend as additional controls. An admission policy could reject confirmed exploit patterns, but validate it against legitimate routes; Gateway API match values can contain special characters. These measures reduce exposure but do not fix the shim. The backend and admission-policy measures are compensating controls; their effectiveness depends on the deployment and the specific route behavior

History

Fri, 16 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Thu, 15 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description A flaw was found in the internal WebAssembly (WASM) shim used by the Kuadrant operator. When generating the CEL predicate that determines whether Gateway-level authentication and rate limiting should run, the shim does not correctly escape values from HTTPRoute match fields. A user who can create or modify an HTTPRoute attached to a shared Gateway can provide a crafted path, header, or query match value that causes the predicate to skip those checks. The request is still forwarded to the route’s backend.
Title Github.com/kuadrant/kuadrant-operator/internal/wasm: github.com/rh-api-management/rhcl-operator-product-build/kuadrant-operator: kuadrant-operator: crafted httproute match values can bypass gateway policy overrides
First Time appeared Redhat
Redhat connectivity Link
Redhat openshift Ai
Weaknesses CWE-917
CPEs cpe:/a:redhat:connectivity_link:1
cpe:/a:redhat:openshift_ai
Vendors & Products Redhat
Redhat connectivity Link
Redhat openshift Ai
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-16T09:44:13.686Z

Reserved: 2026-10-09T19:33:38.381Z

Link: CVE-2026-108334

cve-icon Vulnrichment

Updated: 2026-10-15T20:08:14.429Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-15T19:17:20.187

Modified: 2026-10-16T10:18:04.477

Link: CVE-2026-108334

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-15T16:53:51Z

Links: CVE-2026-108334 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-16T06:45:14Z

Weaknesses