Is CVE-2026-45350 actively exploited?

No active exploitation of CVE-2026-45350 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45350 be exploited remotely?

Yes. CVE-2026-45350 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45350?

CVE-2026-45350 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-45350

CWE-862Published: May 15, 2026· Updated: May 18, 2026

7.1

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.2th

Official Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, there is a vulnerability in chat completion API, which allows attackers to bypass tool restrictions, potentially enabling unauthorized actions or access. In the chat_completion API, the parameters tool_ids and tool_servers are supplied by the user. These parameters are used to create a tools_dict by the middleware. This is then used by get_tool_by_id to retrieve the appropriate tool. However, there is no checks in that ensures the user that uses the API has permission to use the tool, meaning that a user can invoke any server tool by supplying the correct tool_id or tool_servers parameters via the chat completion API. Moreover, the authentication token stored in the server would be used when invoking the tool, so the tool will be invoked with the server privilege. This vulnerability is fixed in 0.8.6.

NVD Source

Technical Analysis

CVE-2026-45350 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.1.