CVE-2026-61643

Summary

FastGPT is a knowledge-based AI application platform. From 4.14.17 until 4.15.0-beta5, an authenticated FastGPT user can save a workflow node that points to another user's private HTTP toolset by using a crafted saved tool id such as http-<victim_toolset_app_id>/<tool_name>. The normal toolset routes deny access, but the workflow save and runtime path did not apply the same authorization check to the referenced toolset, allowing /api/v2/chat/completions to resolve the saved reference and execute the victim-owned HTTP tool. This issue is fixed in version 4.15.0-beta5.

Affected Software

VendorProductVersion RangeStatus
labringFastGPT>= 4.14.17, < 4.15.0-beta5affected

Weaknesses

  • CWE-863: CWE-863: Incorrect Authorization

References