FastGPT is an AI Agent building platform. Prior to 4.14.10.3, the /api/core/app/mcpTools/runTool endpoint accepts arbitrary URLs without authentication. The internal IP check in isInternalAddress() only blocks private IPs when CHECK_INTERNAL_IP=true, which is not the default. This allows unauthenticated attackers to perform SSRF against internal network resources. This vulnerability is fixed in 4.14.10.3.
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Workaround
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References
History
Fri, 10 Apr 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FastGPT is an AI Agent building platform. Prior to 4.14.10.3, the /api/core/app/mcpTools/runTool endpoint accepts arbitrary URLs without authentication. The internal IP check in isInternalAddress() only blocks private IPs when CHECK_INTERNAL_IP=true, which is not the default. This allows unauthenticated attackers to perform SSRF against internal network resources. This vulnerability is fixed in 4.14.10.3. | |
| Title | FastGPT has Unauthenticated SSRF in /api/core/app/mcpTools/runTool via missing CHECK_INTERNAL_IP default | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-10T16:39:25.856Z
Reserved: 2026-04-09T01:41:38.536Z
Link: CVE-2026-40100
Vulnrichment
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NVD
Status : Received
Published: 2026-04-10T17:17:12.997
Modified: 2026-04-10T17:17:12.997
Link: CVE-2026-40100
Redhat
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OpenCVE Enrichment
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Weaknesses