Is CVE-2026-34163 actively exploited?

No active exploitation of CVE-2026-34163 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34163 be exploited remotely?

Yes. CVE-2026-34163 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34163?

CVE-2026-34163 has a CVSS score of 7.7 (HIGH).

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HIGH

CVE-2026-34163

CWE-918Published: March 31, 2026· Updated: Apr 1, 2026

7.7

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.2th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-34163 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.7.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.