The Model Context Protocol TypeScript SDK provides TypeScript client and server implementations of the Model Context Protocol.
The Model Context Protocol TypeScript SDK provides TypeScript client and server implementations of the Model Context Protocol. From 1.6.0 until 1.32.0 in @modelcontextprotocol/sdk, from 2.0.0 until 2.3.0 in @modelcontextprotocol/server, from 2.0.0 until 2.0.2 in @modelcontextprotocol/express, and from 2.0.0 until 2.3.1 in @modelcontextprotocol/server-legacy, server-side bearer authentication could accept a valid access token issued for a different service because the SDK did not enforce the token audience. The affected surface is server-side HTTP bearer authentication. The trigger is a valid token whose audience names another service. The authorization server must issue tokens for multiple s
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Modelcontextprotocol, @Modelcontextprotocol
- Product
- typescript-sdk, sdk, server
- CVSS v3.1
- 6.8 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Fix
- available
- Weakness
- CWE-863
- Exposure class
- Developer platform, AI infrastructure
- NVD status
- Received
Why it ranks 19 (Routine)
- CVSS v3.1 6.8 medium
- Product class: developer platform, AI infrastructure
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-111771 on this site · NVD · CVE.org · Vulnpedia
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