Auth bypass in Fastgpt
CVE-2026-34162
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 us…
Vulnerability class: Broken Authentication
EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L.
Affected products
- Fastgpt
- Labring Fastgpt — versions < 4.14.9.5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-34162?
- CVE-2026-34162 is a critical-severity vulnerability in Fastgpt, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2026-03-31.
- How severe is CVE-2026-34162?
- Critical severity. CVSS v3 base score is 10.0 out of 10.