CVE-2026-40252

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/labring/FastGPT/releases/tag/v4.14.10.4	Release Notes
https://github.com/labring/FastGPT/security/advisories/GHSA-gc8m-w37w-24hw	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:fastgpt:fastgpt:*:*:*:*:*:*:*:*

History

21 Apr 2026, 18:52

Type	Values Removed	Values Added
CPE		cpe:2.3:a:fastgpt:fastgpt::::::::
First Time		Fastgpt Fastgpt fastgpt
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.1
References	~~() https://github.com/labring/FastGPT/releases/tag/v4.14.10.4 -~~	() https://github.com/labring/FastGPT/releases/tag/v4.14.10.4 - Release Notes
References	~~() https://github.com/labring/FastGPT/security/advisories/GHSA-gc8m-w37w-24hw -~~	() https://github.com/labring/FastGPT/security/advisories/GHSA-gc8m-w37w-24hw - Vendor Advisory

10 Apr 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-10 21:16

Updated : 2026-04-21 18:52

NVD link : CVE-2026-40252

Mitre link : CVE-2026-40252

CVE.ORG link : CVE-2026-40252

JSON object : View

Products Affected

fastgpt

fastgpt

CWE

CWE-284

Improper Access Control

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-40252", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-04-10T21:16:27.907", "references": [{"url": "https://github.com/labring/FastGPT/releases/tag/v4.14.10.4", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/labring/FastGPT/security/advisories/GHSA-gc8m-w37w-24hw", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-04-21T18:52:50.580", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:fastgpt:fastgpt:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8EED425E-73C6-4E20-B5B0-3BBBD5131E15", "versionEndExcluding": "4.14.10.4"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}