{"id":"CVE-2026-108716","published":"2026-10-11T13:17:14.720","lastModified":"2026-10-16T19:18:44.867","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.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","cwes":["CWE-319"],"vendors":[],"products":[],"references":[{"url":"https://github.com/punkpeye/mcp-remote","tags":[]},{"url":"https://github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/client-credentials.ts#L37-L47","tags":[]},{"url":"https://github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/device-authorization.ts#L64-L170","tags":[]},{"url":"https://hackmd.io/@haind03/punkpeye-mcp-remote-device-code-cleartext-oauth-transport","tags":[]},{"url":"https://www.vulncheck.com/advisories/mcp-remote-0.8.0-through-0.14.3-cleartext-credential-transmission-via-device-code-oauth-grant","tags":[]}],"exploitRefs":[{"url":"https://github.com/punkpeye/mcp-remote","tags":[]},{"url":"https://github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/client-credentials.ts#L37-L47","tags":[]},{"url":"https://github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/device-authorization.ts#L64-L170","tags":[]}],"hasPoc":true,"ai":null}