FastGPT: Unauthenticated SSRF via httpTools Endpoint Leads to Internal API Key Theft

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Summary

CVECVE-2026-34162
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-31 15:16:16 UTC
Updated2026-04-01 18:38:39 UTC
DescriptionFastGPT is an AI Agent building platform. Prior to version 4.14.9.5, the FastGPT HTTP tools testing endpoint (/api/core/app/httpTools/runTool) is exposed without any authentication. This endpoint acts as a full HTTP proxy — it accepts a user-supplied baseUrl, toolPath, HTTP method, custom headers, and body, then makes a server-side HTTP request and returns the complete response to the caller. This issue has been patched in version 4.14.9.5.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

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

EPSS: 0.000910000 probability, percentile 0.257540000 (date 2026-04-01)

Problem Types: CWE-306 | CWE-918 | CWE-306 CWE-306: Missing Authentication for Critical Function | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
3.1CNADECLARED10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Fastgpt Fastgpt All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Labring FastGPT affected < 4.14.9.5 Not specified

References

ReferenceSourceLinkTags
github.com/labring/FastGPT/security/advisories/GHSA-w36r-f268-pwrj 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Exploit, Mitigation, Vendor Advisory
github.com/labring/FastGPT/pull/6640 [email protected] github.com Issue Tracking, Patch
github.com/labring/FastGPT/releases/tag/v4.14.9.5 [email protected] github.com Product, Release Notes
github.com/labring/FastGPT/commit/bc7eae2ed61481a5e322208829be291faec58c00 [email protected] github.com Patch
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