{"cve":"CVE-2026-58497","nvd":{"published":"2026-10-23T15:17:34.257","modified":"2026-10-23T21:17:24.620","status":"Deferred","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.","cvss_v4":{"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},"cvss_v3":null,"cwes":["CWE-346","CWE-352"],"references":["https://github.com/olo-dot-io/Uni-CLI/releases/tag/v0.225.2","https://github.com/olo-dot-io/Uni-CLI/security/advisories/GHSA-v3f4-w7r7-v3hm"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-58497","score":0.00255,"percentile":0.16978,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-v3f4-w7r7-v3hm","url":"https://osv.dev/vulnerability/GHSA-v3f4-w7r7-v3hm","summary":"Uni-CLI: Legacy HTTP MCP transport accepted browser-originated localhost requests","modified":"2026-10-24T02:56:07.901889063Z","packages":[{"ecosystem":"npm","name":"@zenalexa/unicli","purl":"pkg:npm/%40zenalexa/unicli","ranges":["<0.225.2"],"fixed":["0.225.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}