npm/@modelcontextprotocol/client CVE-2026-111769: medium 6.5
MCP TypeScript client SDK: HTTP client transports and OAuth requests followed cross-origin redirects and re-sent custom headers and request bodies
Action: Upgrade @modelcontextprotocol/client to 2.3.0 or later.
npm i @modelcontextprotocol/client@2.3.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 2.0.0 | 2.3.0 | - |
Fixed versions
| 2.3.0 |
Sources
- osv: GHSA-6prh-2h8m-c8cw#npm/@modelcontextprotocol/client
- https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-6prh-2h8m-c8cw
- https://github.com/modelcontextprotocol/typescript-sdk/pull/2901
- https://github.com/modelcontextprotocol/typescript-sdk/pull/2902
- https://github.com/modelcontextprotocol/typescript-sdk/commit/30bfe5139f4b0825c90cd725f9a7e3f9af5e120d
- https://github.com/modelcontextprotocol/typescript-sdk/commit/433eb413dc305ebeb93b8ebcde0095a8fc0d5fa0
- https://github.com/modelcontextprotocol/typescript-sdk
CVE-2026-111769 · published · modified · JSON