CVE-2026-109332 Details
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.
A CORS origin validation error has been identified in Network-AI versions prior to 5.15.2. The issue resides in the McpSseServer._handleRequest method within the lib/mcp-transport-sse.ts file. This vulnerability allows localhost origins to be reflected into the Access-Control-Allow-Origin header, regardless of the server's bind interface. When the server is bound to a non-loopback address and accessible to a network peer, an attacker can exploit this by sending a request from a page with a localhost origin, potentially accessing unauthenticated endpoints like /health cross-origin.
Update Network-AI to version 5.15.2 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 12, 2026CISA-ADP
Assessed Oct 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Jovancoding/Network-AI/security/advisories/GHSA-4pvg-m42h-c3x2 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/Jovancoding/Network-AI/security/advisories/GHSA-4pvg-m42h-c3x2 | [email protected] | AdvisoryExploitRemedyVendor |
| https://www.vulncheck.com/advisories/network-ai-before-5.15.2-cors-origin-validation-error-in-mcp-sse-transport | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-346 | Origin Validation Error | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Network-AI | <= 5.15.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 15, 2026 | CVE Modified | CISA-ADP |
| Oct 12, 2026 | New CVE Received | [email protected] |