7.7

CVE-2026-34163

Exploit

Server-Side Request Forgery via MCP Tools Endpoint in FastGPT

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's MCP (Model Context Protocol) tools endpoints (/api/core/app/mcpTools/getTools and /api/core/app/mcpTools/runTool) accept a user-supplied URL parameter and make server-side HTTP requests to it without validating whether the URL points to an internal/private network address. Although the application has a dedicated isInternalAddress() function for SSRF protection (used in other endpoints like the HTTP workflow node), the MCP tools endpoints do not call this function. An authenticated attacker can use these endpoints to scan internal networks, access cloud metadata services, and interact with internal services such as MongoDB and Redis. This issue has been patched in version 4.14.9.5.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Fastgpt ≫ Fastgpt Version < 4.14.9.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.198
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.7 3.1 4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
security-advisories@github.com 7.7 3.1 4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

https://github.com/labring/FastGPT/pull/6640
Patch
Issue Tracking
https://github.com/labring/FastGPT/commit/bc7eae2ed61481a5e322208829be291faec58c00
Patch
https://github.com/labring/FastGPT/releases/tag/v4.14.9.5
Product
Release Notes
https://github.com/labring/FastGPT/security/advisories/GHSA-x9vj-5m4j-9mfv
Vendor Advisory
Exploit
Mitigation