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CVE-2026-40252

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

Published: Apr 10, 2026Updated: Apr 21, 2026 Sources: CVE List NVDCWE-284
8.1HIGH
NVD MITRE
EPSS Score
0.3%
Top 73.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-284CWE-639

Affected Products

labring
commercial
FastGPTSaaS
AI / ML / llm-serving-inference
fastgpt
commercial
fastgptSaaS
AI / ML / llm-serving-inference

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/labring/FastGPT/security/advisories/GHSA-gc8m-w37w-24hw
github.com
https://github.com/labring/FastGPT/releases/tag/v4.14.10.4
github.com

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