Model Context Protocol Python SDK: Server bearer-token authentication accepts tokens issued for a different resource server
影響: pip:mcp >= 2.0.0, < 2.2.0 → 2.2.0, pip:mcp >= 1.10.0, < 1.30.0 → 1.30.0
In affected versions, the SDK's server-side bearer authentication had no way to check that a token was issued for your server (its audience). Where one authorization server issues tokens for several services, a valid token for another service was also accepted by your MCP server. Am I affected? Yes, if your HTTP server uses the SDK's bearer authentication (auth=AuthSettings(...) with token_verifier=), its authorization server also issues tokens for other services, and your TokenVerifier does no…
| CVE | CVE-2026-116684 |
|---|---|
| 정보원 | GitHub Advisory Database |
| 수집 시각 | 2026. 10. 28. 오전 06:17 |
| 데이터 | Markdown JSON |
2026. 10. 28. 오전 06:06, GitHub Advisory Database에서 "Model Context Protocol Python SDK: Server bearer-token authentication accepts tokens issued for a different resource server"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "보통"(medium)입니다. 관련 기술: Python. CVE: CVE-2026-116684.