CVE-2026-61643

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.

CVSS 3.1

5.9CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-07-15

Modified

2026-10-24

Record from

the NVD, synced 2026-10-25

References

• https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta5
• https://github.com/labring/FastGPT/security/advisories/GHSA-93r3-wqq3-c5ch
• https://github.com/labring/FastGPT/security/advisories/GHSA-93r3-wqq3-c5ch

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