🛡️ CVE-2026-61643

🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-863 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

FastGPT is a knowledge-based AI application platform. From 4.14.17 until 4.15.0-beta5, an authenticated FastGPT user can save a workflow node that points to another user's private HTTP toolset by using a crafted saved tool id such as http-<victim_toolset_app_id>/<tool_name>. The normal toolset routes deny access, but the workflow save and runtime path did not apply the same authorization check to the referenced toolset, allowing /api/v2/chat/completions to resolve the saved reference and execute the victim-owned HTTP tool. This issue is fixed in version 4.15.0-beta5.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity high, availability none.

Weakness class

CVE-2026-61643 is classified as CWE-863: Incorrect Authorization. An authorisation check runs but reaches the wrong conclusion, permitting actions it should refuse.

Affected software

CVE-2026-61643 is recorded against 1 package.

  • unknown

Timeline and source

Published on 15 July 2026 and last revised on 20 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com
github.com

Details

Severity MEDIUM
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
CWE CWE-863
Public Exploit ✅ No
Source NVD
Published 2026-07-15
Updated 2026-08-11
Modified 2026-07-20
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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