{"id":"CVE-2026-108716","revision":"044e965b2f2d453fac4a12fc189e7b1a","records":[{"revision":"044e965b2f2d453fac4a12fc189e7b1a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108716","aliases":[],"title":"mcp-remote 0.8.0 through 0.14.3 Cleartext Credential Transmission via --device-code OAuth Grant","description":"mcp-remote 0.8.0 through 0.14.3 contains a cleartext transmission vulnerability in authorizeWithDeviceCode that sends client secrets and receives tokens without enforcing HTTPS endpoints. When discovered device authorization and token endpoints are non-loopback http URLs, on-path network attackers can capture the client secret plus issued access and refresh tokens.","state":0,"publishedAt":"2026-10-11T12:19:28.64+00:00","modifiedAt":"2026-10-13T17:01:20.229+00:00","affected":[{"ecosystem":"Vendor product","name":"mcp-remote","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"punkpeye\",\n                    \"product\": \"mcp-remote\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0.8.0\",\n                            \"lessThanOrEqual\": \"0.14.3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/mcp-remote\",\n                    \"repo\": \"https://github.com/punkpeye/mcp-remote\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":6,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haind03/punkpeye-mcp-remote-device-code-cleartext-oauth-transport","https://github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/device-authorization.ts#L64-L170","https://github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/client-credentials.ts#L37-L47","https://github.com/punkpeye/mcp-remote","https://www.vulncheck.com/advisories/mcp-remote-0.8.0-through-0.14.3-cleartext-credential-transmission-via-device-code-oauth-grant"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108716","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108716","identifiers":["CVE-2026-108716"]},"retained":false,"historicalAffected":[]}],"coverage":[]}