{"schema":"threatline.record/2","record":{"id":"CVE-2026-58497","aliases":["GHSA-v3f4-w7r7-v3hm"],"summary":"Uni-CLI: Legacy HTTP MCP transport accepted browser-originated localhost requests","details":"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.","categories":["Libraries & packages"],"product":"Uni-CLI","vendor":"olo-dot-io","ecosystem":"npm","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-58497","source_modified_at":"2026-10-23T20:57:14.612Z","fetched_at":"2026-10-23T21:10:45.942435Z","product":"Uni-CLI","vendor":"olo-dot-io","versions":[{"version":"< 0.225.2","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v3f4-w7r7-v3hm","source_modified_at":"2026-09-10T03:50:50.682466091Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@zenalexa/unicli","purl":"pkg:npm/%40zenalexa/unicli"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"0.225.2"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v3f4-w7r7-v3hm","source_modified_at":"2026-09-10T03:50:50.682466091Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"@zenalexa/unicli","purl":"pkg:npm/%40zenalexa/unicli"},"version":"0.225.2"}],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T14:49:42.619Z","modified_at":"2026-10-23T20:57:14.612Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-58497","fetched_at":"2026-10-23T21:10:45.942435Z","source_modified_at":"2026-10-23T20:57:14.612Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-v3f4-w7r7-v3hm","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-09-10T03:50:50.682466091Z"}],"sources":["CVE List","OSV"],"references":[{"source":"CVE List","url":"https://github.com/olo-dot-io/Uni-CLI/security/advisories/GHSA-v3f4-w7r7-v3hm","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/olo-dot-io/Uni-CLI/releases/tag/v0.225.2","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-23T20:54:34.404803Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T20:57:14.612Z","content_hash":"d8e74460e48261334c195c543799b8fe8aa2481e5d6bff4c5b2ded0d881613ab"}}