CVE-2026-61643Public exploitNetwork attack vector

Cross-tenant tool execution via unchecked workflow references

Published Jul 15, 2026 · Updated Jul 15, 2026

Incorrect authorization in FastGPT 4.14.17 through 4.14.23 and 4.15.0-beta3 allows remote authenticated users to execute private HTTP tools. The workflow save path accepts a crafted combined tool identifier without checking access to its parent toolset, and runtime trusts that persisted reference. Exploitation requires a normal account, workflow privileges, and a valid private tool identifier; it exposes tool output and invokes the configured capability.

CVSS severity5.9
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in FastGPT 4.14.17 through 4.14.23 and 4.15.0-beta3 allows remote authenticated users to execute private HTTP tools. The workflow save path accepts a crafted combined tool identifier without checking access to its parent toolset, and runtime trusts that persisted reference. Exploitation requires a normal account, workflow privileges, and a valid private tool identifier; it exposes tool output and invokes the configured capability.

The record

CVE
CVE-2026-61643
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
Labring
Product
FastGPT
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.14.17, < 4.15.0-beta5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Labring · FastGPTversion=>= 4.14.17, < 4.15.0-beta5

Published CVSS scores

5.9GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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