Vulnerability in punkpeye mcp-remote

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/punkpeye/mcp-remote
• github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/client-credentials.ts
• github.com/punkpeye/mcp-remote/blob/v0.14.3/src/lib/device-authorization.ts
• hackmd.io/@haind03/punkpeye-mcp-remote-device-code-cleartext-oauth-transport
• www.vulncheck.com/advisories/mcp-remote-0.8.0-through-0.14.3-cleartext-credential-trans…