CVE-2026-61646: Labring Fastgpt

Medium severity, CVSS 6.3. EPSS: 0.4% chance of exploitation in the next 30 days.

FastGPT is a knowledge-based AI application platform. Prior to 4.15.0-beta5, FastGPT's shared SSRF guard validates only the initial request URL before handing the request to axios, and axios follows redirects by default. An authenticated workflow user can configure an HTTP request node to call an attacker-controlled public URL that redirects to cloud metadata, loopback, or internal services that the guard would block on direct request, and the HTTP node returns the response body to the workflow caller. This issue is fixed in version 4.15.0-beta5.

Affected products

• Labring Fastgpt: before 4.15.0-beta5 (fixed in 4.15.0-beta5)

Published 2026-07-15. Last modified 2026-07-15.