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CVE-2026-44566

Openwebui Open Webui unrestricted file upload

7.3 HIGHPublic exploitEPSS 0.46%
  1. Published15 May 2026

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

Openwebui Open Webui< 0.1.124

Remediation

Fixed in
Openwebui Open Webui≥ 0.1.124

References

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Frequently asked

Is CVE-2026-44566 being actively exploited?

CVE-2026-44566 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.46%.

How severe is CVE-2026-44566?

CVE-2026-44566 has a CVSS 3.1 base score of 7.3, rated high. EPSS estimates a 0.46% probability of exploitation.

Which products are affected by CVE-2026-44566?

Affected products include Openwebui Open Webui.

How do I fix CVE-2026-44566?

Upgrade affected software to a fixed version, for example Openwebui Open Webui 0.1.124 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-44566 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.