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CVE-2026-54012

Openwebui Open Webui broken access control

7.1 HIGHPublic exploitEPSS 0.33%
  1. Published23 Jun 2026

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI lets a user who can create, update, or import workspace models store arbitrary meta.knowledge entries on their model without checking whether they own or can read the referenced files. Open WebUI then treats meta.knowledge entries of type file as an authorization source in two places: the built-in view_file tool reads the file's extracted text, and has_access_to_file()'s model branch authorizes the file content and file delete endpoints. A malicious model owner can therefore attach another user's file ID to their model metadata and read or delete that private file. This vulnerability is fixed in 0.9.6.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected products

Openwebui Open Webui< 0.9.6

Remediation

Fixed in
Openwebui Open Webui≥ 0.9.6

References

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Frequently asked

Is CVE-2026-54012 being actively exploited?

CVE-2026-54012 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.33%.

How severe is CVE-2026-54012?

CVE-2026-54012 has a CVSS 3.1 base score of 7.1, rated high. EPSS estimates a 0.33% probability of exploitation.

Which products are affected by CVE-2026-54012?

Affected products include Openwebui Open Webui.

How do I fix CVE-2026-54012?

Upgrade affected software to a fixed version, for example Openwebui Open Webui 0.9.6 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-54012 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.