FastGPT is an AI Agent building platform. Prior to version 4.14.17, FastGPT had an inconsistent SSRF protection gap in MCP tool URL handling. The direct MCP preview/run endpoints already rejected internal/private network URLs, but the MCP tool create/update endpoints could still save an internal MCP server URL. That stored URL could later be used by workflow execution without revalidating the destination. An authenticated user with permission to create or manage MCP toolsets could store an internal endpoint such as http://localhost:3000/mcp and later cause the FastGPT backend workflow runner to connect to that internal destination. This issue has been patched in version 4.14.17.
History

Sat, 09 May 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Labring
Labring fastgpt
Vendors & Products Labring
Labring fastgpt

Fri, 08 May 2026 22:30:00 +0000

Type Values Removed Values Added
Description FastGPT is an AI Agent building platform. Prior to version 4.14.17, FastGPT had an inconsistent SSRF protection gap in MCP tool URL handling. The direct MCP preview/run endpoints already rejected internal/private network URLs, but the MCP tool create/update endpoints could still save an internal MCP server URL. That stored URL could later be used by workflow execution without revalidating the destination. An authenticated user with permission to create or manage MCP toolsets could store an internal endpoint such as http://localhost:3000/mcp and later cause the FastGPT backend workflow runner to connect to that internal destination. This issue has been patched in version 4.14.17.
Title FastGPT: Stored MCP tool URL SSRF in FastGPT workflow execution
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-08T22:12:39.854Z

Reserved: 2026-05-05T17:39:31.112Z

Link: CVE-2026-44284

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-08T23:16:39.507

Modified: 2026-05-08T23:16:39.507

Link: CVE-2026-44284

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-08T23:45:20Z