CVE-2026-31020

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

In DocsGPT 0.15.0 and below, the application provides a custom prompt feature that allows users to define prompt content used during chatbot interactions. This functionality renders user-supplied prompt data using Jinja templates without input sanitization or sandboxing. An unauthenticated attacker can inject malicious template expressions, leading to a server-side template injection (SSTI) vulnerability that can be exploited to achieve full remote code execution (RCE).

Published 2026-09-04. Last modified 2026-09-08.