CVE Watch2 de nov. de 2026

CVE-2026-116684

The Model Context Protocol Python SDK is the official Python SDK for Model Context Protocol servers and clients. From 1.10.0 until 1.30.0 an

CVSS

6.8

Média

EPSS

0.4%

p31

KEV

—

Exploit Today

0-100

Publicado: 27 de out. de 2026 · Última mod.: 2 de nov. de 2026 · CWE-863

EPSS · 30d

0.4%EPSS · 30 dias0.4%

2026-10-282026-11-07

Descrição técnica

The Model Context Protocol Python SDK is the official Python SDK for Model Context Protocol servers and clients. From 1.10.0 until 1.30.0 and 2.2.0, server-side bearer authentication configured through AuthSettings with token_verifier accepts a valid token issued for another service when the authorization server serves multiple resources and the TokenVerifier does not independently validate the aud audience. This resource-confusion flaw lets a token holder authenticate to the wrong MCP server and exercise that token's resulting access. This issue is fixed in versions 1.30.0 and 2.2.0.

Referências oficiais

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