CVE-2026-45401

EIP tracks 1 public exploit for CVE-2026-45401. PoCs published by nayakchinmohan.

AI-analyzed exploit summary This repository contains a functional exploit script for CVE-2026-45401, demonstrating an SSRF vulnerability in Open WebUI v0.9.4 via HTTP redirect bypass. The script includes two attack vectors: one for full-read access and another for semi-blind data exfiltration.

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, the validate_url() function in backend/open_webui/retrieval/web/utils.py only validates the initial URL submitted by the caller. The HTTP clients used downstream (sync requests, async aiohttp, langchain's WebBaseLoader) follow HTTP 3xx redirects by default and do not re-validate the redirect target against the private-IP / metadata-IP block list. Any authenticated user can therefore submit a public URL that 302-redirects to an internal address (e.g. 127.0.0.1, 169.254.169.254, RFC1918) and read the internal response body via the /api/v1/retrieval/process/web endpoint, the /api/v1/images/... endpoints, the /api/chat/completions endpoint with an image_url content part, and any other route that calls these helpers. This vulnerability is fixed in 0.9.5.