CVE-2026-40252

HIGH

Broken Access Control (IDOR) Leading to Cross-Tenant Application Access in FastGPT

Title source: cna

Description

FastGPT is an AI Agent building platform. Prior to 4.14.10.4, Broken Access Control vulnerability (IDOR/BOLA) allows any authenticated team to access and execute applications belonging to other teams by supplying a foreign appId. While the API correctly validates the team token, it does not verify that the requested application belongs to the authenticated team. This leads to cross-tenant data exposure and unauthorized execution of private AI workflows. This vulnerability is fixed in 4.14.10.4.

References (2)

[X_Refsource_Confirm] https://github.com/labring/FastGPT/security/advisories/GHSA-gc8m-w37w-24hw

[X_Refsource_Misc] https://github.com/labring/FastGPT/releases/tag/v4.14.10.4

Scores

CVSS v3 8.1

EPSS 0.0005

EPSS Percentile 15.3%

Attack Vector NETWORK

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

Details

CWE

CWE-284 CWE-639

Status published

Products (2)

fastgpt/fastgpt < 4.14.10.4

labring/FastGPT < 4.14.10.4

Published Apr 10, 2026

Tracked Since Apr 11, 2026