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CVE-2026-54013

Openwebui Open Webui cross-site scripting (XSS)

7.6 HIGHPublic exploitEPSS 0.30%
  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 patched SVG XSS in user profile images and webhook profile images but forgot to apply the same fix to model profile images. The ModelMeta class has no validate_profile_image_url field validator, and the model image serving endpoint has no MIME allowlist or nosniff header. Any authenticated user with workspace.models permission (enabled by default) can store a data:image/svg+xml;base64,... payload in a model's profile image and achieve full account takeover of anyone who navigates to the image URL. This vulnerability is fixed in 0.9.6.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

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-2026-54013 being actively exploited?

CVE-2026-54013 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.30%.

How severe is CVE-2026-54013?

CVE-2026-54013 has a CVSS 3.1 base score of 7.6, rated high. EPSS estimates a 0.30% probability of exploitation.

Which products are affected by CVE-2026-54013?

Affected products include Openwebui Open Webui.

How do I fix CVE-2026-54013?

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-2026-54013 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.