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CVE-2026-92359

ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy

CVSS 4.0 2.3 LOWCVSS 3.1 3.1 LOWCVSS 3.0 3.1 LOWCVSS 2.0 2.6 Check source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-92359

Published

A security flaw has been discovered in ag-ui-protocol ag-ui 0.3.0. The affected element is the function create_strands_app of the file integrations/aws-strands/python/src/ag_ui_strands/utils.py of the component CORSMiddleware. The manipulation results in permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is described as difficult. Upgrading to version [email protected] is sufficient to fix this issue. The patch is identified as 9b143b9668fa52c2054ede9d34a45ac4b4401089. It is suggested to upgrade the affected component.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-92359

Published

ag-ui

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "ag-ui-protocol",
                    "product": "ag-ui",
                    "versions": [
                        {
                            "version": "0.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "[email protected]",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "CORSMiddleware"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON