FastgptApplication

CVE-2026-34162

CRITICAL · 10.0 CVSS v3.1 Published 2026-03-31
Fix available
A fix is available. Upgrade to 4.14.9.5 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
FastGPT 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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

FastGPT versions before 4.14.9.5 expose the /api/core/app/httpTools/runTool endpoint without authentication. This endpoint functions as a full HTTP proxy, accepting user-supplied baseUrl, toolPath, HTTP method, headers, and body to make server-side requests and return complete responses. The vulnerability enables unauthenticated attackers to use the server as a proxy for arbitrary HTTP requests, facilitating SSRF attacks against internal services, cloud metadata endpoints, and internal network resources.

MitigationApply vendor patch version 4.14.9.5 or later to enforce authentication on the /api/core/app/httpTools/runTool endpoint. Until patched, network-level restrictions on the endpoint should be implemented as a compensating control.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
FastgptApplication
Affected:< 4.14.9.5

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify your FastGPT installation version
    Check the version number running in your environment. This is typically visible in the application UI, startup logs, container tags, or deployment manifests. Compare this version against the affected range: versions prior to 4.14.9.5.
    Affected if The installed FastGPT version is lower than 4.14.9.5
  2. Locate the vulnerable HTTP tools endpoint
    Verify that the endpoint /api/core/app/httpTools/runTool exists in your FastGPT deployment. This is typically found in the API routes or service documentation.
    Affected if The endpoint /api/core/app/httpTools/runTool is present in your environment
  3. Confirm the endpoint lacks authentication
    Attempt to access the /api/core/app/httpTools/runTool endpoint without providing valid authentication credentials (such as login tokens, API keys, or session cookies). Observe whether the request is accepted and processed.
    Affected if The endpoint accepts and processes requests without requiring any authentication tokens or authorization headers
  4. Test if arbitrary URLs are accepted
    Send a test request to the endpoint with user-controlled parameters: a baseUrl pointing to an internal or external address (such as http://localhost or a known internal service), a toolPath, HTTP method, headers, and body. Check if the server makes the request and returns the response.
    Affected if The endpoint accepts user-supplied baseUrl, toolPath, method, headers, and body parameters and returns the full response from the specified URL

You are affected if your FastGPT version is below 4.14.9.5 AND the /api/core/app/httpTools/runTool endpoint is accessible without authentication AND accepts arbitrary URL parameters.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 4.14.9.5 or later
Fixed in 4.14.9.5
Vendor patch github.com →
Interim mitigation

Apply vendor patch version 4.14.9.5 or later to enforce authentication on the /api/core/app/httpTools/runTool endpoint. Until patched, network-level restrictions on the endpoint should be implemented as a compensating control.

Recommended fix High confidence

4.14.9.5

  1. Upgrade FastGPT to version 4.14.9.5 or later to remediate the missing authentication vulnerability
  2. After upgrading, verify that the /api/core/app/httpTools/runTool endpoint now requires authentication
  3. Consult the FastGPT release notes or changelog to confirm the security patch was applied

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Fastgpt Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing3.0 h
  • Review / QA2.0 h
8.0 hours of engineering $1,390
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,224.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-34162 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data