Vulnerability · Published May 15, 2026 · Assigned by GitHub_M

CVE-2026-45397Open WebUI: Unauthenticated RAG Configuration Disclosure

Medium 5.3

In plain English

A medium-severity missing authentication in open-webui from open-webui. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.8%top 44.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Nuclei

Official description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key is required. Every adjacent endpoint on the same router (/embedding, /config) is correctly guarded by get_admin_user making this a targeted omission. This vulnerability is fixed in 0.9.5.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	open-webui	0.9.5	GHSA-65pg-qhhw-mxwg
PyPI	open-webui	0.9.5	PYSEC-2026-2706

Affected products (as reported)

Vendor	Product	Versions
open-webui	open-webui	< 0.9.5

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwg x_refsource_CONFIRM