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.
History

Tue, 13 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 08:15:00 +0000

Type Values Removed Values Added
First Time appeared Punkpeye
Punkpeye mcp-remote
Vendors & Products Punkpeye
Punkpeye mcp-remote

Sun, 11 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title mcp-remote 0.8.0 through 0.14.3 Cleartext Credential Transmission via --device-code OAuth Grant
Weaknesses CWE-319
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-11T12:19:28.640Z

Updated: 2026-10-13T17:01:20.229Z

Reserved: 2026-10-11T01:51:49.626Z

Link: CVE-2026-108716

cve-icon Vulnrichment

Updated: 2026-10-13T15:49:41.523Z

cve-icon NVD

Status : Deferred

Published: 2026-10-11T13:17:14.720

Modified: 2026-10-16T19:18:44.867

Link: CVE-2026-108716

cve-icon Redhat

No data.