Description
Network-AI (npm network-ai) before 5.15.2 contains an origin validation error in McpSseServer._handleRequest in lib/mcp-transport-sse.ts that reflects localhost Origins into Access-Control-Allow-Origin regardless of bind interface. When the server binds a non-loopback address, an attacker page with a localhost Origin visited by a victim can read unauthenticated endpoints like /health cross-origin.
Metrics
CVSS 3.1 3.1/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:NWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Oct 12, 2026
- Last modified
- Oct 15, 2026
- NVD status
- Deferred