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CVE-2026-44554

Openwebui Open Webui broken access control

8.1 HIGHPublic exploitEPSS 0.43%
  1. Published15 May 2026

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/retrieval/process/web endpoint accepts a user-supplied collection_name and an overwrite query parameter (default: True). It performs no authorization check on whether the calling user owns or has write access to the target collection. When overwrite=True, save_docs_to_vector_db calls VECTOR_DB_CLIENT.delete_collection() on the target collection before writing new content. This vulnerability is fixed in 0.9.0.

CVSS 3.1 breakdown

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

Affected products

Openwebui Open Webui< 0.9.0

Remediation

Fixed in
Openwebui Open Webui≥ 0.9.0

References

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Frequently asked

Is CVE-2026-44554 being actively exploited?

CVE-2026-44554 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.43%.

How severe is CVE-2026-44554?

CVE-2026-44554 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.43% probability of exploitation.

Which products are affected by CVE-2026-44554?

Affected products include Openwebui Open Webui.

How do I fix CVE-2026-44554?

Upgrade affected software to a fixed version, for example Openwebui Open Webui 0.9.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-44554 against the real software inventory on every managed device, as each hourly inventory arrives. 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.