Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109287Open WebUI 0.9.6 before 0.11.4 Information Disclosure via Unscoped Directory ID

Medium 4.3

In plain English

A medium-severity authorization bypass via user-controlled key 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 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 79.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Open WebUI from 0.9.6 before 0.11.4 contains an authorization flaw where the knowledge base file listing does not verify that a supplied directory_id belongs to the requested knowledge base. Users with read access to any knowledge base can supply a retained foreign directory UUID to GET /api/v1/knowledge/{id}/files. The returned breadcrumbs expose folder names, owner user ids and knowledge base ids of that directory and all its ancestors.

Affected products (as reported)

Vendor	Product	Versions
open-webui	open-webui	0.9.6 – before 0.11.4

Weakness: CWE-639, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

GitHub Security Advisory (GHSA-jx3w-3pqq-7f3w) vendor-advisory
VulnCheck Advisory: Open WebUI 0.9.6 before 0.11.4 Information Disclosure via Unscoped Directory ID third-party-advisory