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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Jovancoding Network-AI unaffected
Version Status Constraints
0 affected < 5.15.2
5.15.2 unaffected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Network-ai Subscribe
Network-ai Subscribe

Project Subscriptions

Vendors Products
Network-ai Subscribe
Network-ai Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Jovancoding/Network-AI/security/advisories/GHSA-4pvg-m42h-c3x2 cve-icon cve-icon
https://www.vulncheck.com/advisories/network-ai-before-5.15.2-cors-origin-validation-error-in-mcp-sse-transport cve-icon cve-icon
History

Mon, 12 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Network-AI before 5.15.2 CORS Origin Validation Error in MCP SSE Transport
First Time appeared Network-ai
Network-ai network-ai
Weaknesses CWE-346
CPEs cpe:2.3:a:network-ai:network-ai:*:*:*:*:*:*:*:*
Vendors & Products Network-ai
Network-ai network-ai
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-12T16:05:21.175Z

Reserved: 2026-10-12T14:18:12.389Z

Link: CVE-2026-109332

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-12T17:17:29.020

Modified: 2026-10-12T17:17:29.140

Link: CVE-2026-109332

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-12T21:00:14Z

Weaknesses