Excessive Data Exposure in Open WebUI by Open WebUI
CVE-2026-70491

6.5MEDIUM

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
4 August 2026

What is CVE-2026-70491?

Open WebUI is a self-hosted AI platform that inadvertently exposes sensitive information through specific API endpoints. In versions up to 0.10.2, authenticated non-admin users with read-only permissions could access the full source code of Python tools, potentially revealing hard-coded API keys, credentials, and internal service URLs. This vulnerability arises from misconfigured API responses that fail to restrict access to critical data. The issue was addressed in version 0.11.0, which implements stricter access controls to protect sensitive information.

Affected Version(s)

open-webui < 0.11.0

References

https://github.com/open-webui/open-webui/security/advisor...
x_refsource_CONFIRM
https://github.com/open-webui/open-webui/pull/27005
x_refsource_MISC
https://github.com/open-webui/open-webui/commit/c05de13b4...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.