{"id":"CVE-2026-58497","revision":"3cf4ae0a626746d2bb3054a08e19fdd6","records":[{"revision":"3cf4ae0a626746d2bb3054a08e19fdd6","observedAt":"2026-10-23T21:48:20.592+00:00","statement":{"source":"cve-program","id":"CVE-2026-58497","aliases":[],"title":"Uni-CLI: Legacy HTTP MCP transport accepted browser-originated localhost requests","description":"Uni-CLI gives people and agents one command interface for websites, browsers, desktop applications, local tools, and MCP. Prior to version 0.225.2, Uni-CLI exposed the legacy JSON-RPC-over-HTTP MCP transport on loopback without validating browser Origin headers before routing requests. A malicious web page could send a CORS simple POST request, such as text/plain, to the local /mcp endpoint and deliver a JSON-RPC body to the dispatcher. If the user had started the local MCP HTTP transport, that page could drive tools/call requests against the user's local Uni-CLI server. The Streamable HTTP transport already enforced this browser-to-localhost boundary. The legacy stateless HTTP path did not, so the two HTTP transports had drifted. This issue is about the browser-to-localhost boundary; it does not change Uni-CLI's local-code-execution trust model. This issue has been patched in version 0.225.2.","state":0,"publishedAt":"2026-10-23T14:49:42.619+00:00","modifiedAt":"2026-10-23T20:57:14.612+00:00","affected":[{"ecosystem":"Vendor product","name":"Uni-CLI","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"olo-dot-io\",\n                    \"product\": \"Uni-CLI\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.225.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.6,"severity":"HIGH"}],"references":["https://github.com/olo-dot-io/Uni-CLI/security/advisories/GHSA-v3f4-w7r7-v3hm","https://github.com/olo-dot-io/Uni-CLI/releases/tag/v0.225.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-58497","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-58497","identifiers":["CVE-2026-58497"]},"retained":false,"historicalAffected":[]}],"coverage":[]}