VULNERABILITY INTELLIGENCE

CVE-2026-54033

CVSS score7.7 HIGH

EPSS probability0.35%

CISA KEVNot currently listed

Published2026-06-25

Last modified2026-10-25

Description

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.