CVE-2026-81095

pg-aiguide started its MCP HTTP transport without enabling the host allow-list the underlying SDK provides. src/httpServer.ts called the shared httpServerFactory helper and never set the DNS-rebinding-protection option, so the transport accepted a request whatever host it named. A page in a browser could therefore point a name it controlled at the address the server was bound to and drive the locally reachable MCP server through the visitor's browser. The protection was already available in the packaged transport and simply not turned on, so updating the dependency alone would not have closed it. Version 0.5.1 passes the option explicitly.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/timescale/pg-aiguide
https://github.com/timescale/pg-aiguide/pull/121
https://www.vulncheck.com/advisories/timescale-pg-aiguide-through-0.5.0-dns-rebinding-via-disabled-host-header-allow-list

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-27 17:20

Updated : 2026-08-29 04:18

NVD link : CVE-2026-81095

Mitre link : CVE-2026-81095

CVE.ORG link : CVE-2026-81095

JSON object : View

Products Affected

No product.

CWE

CWE-346

Origin Validation Error

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