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CVE-2025-64495

Openwebui Open Webui cross-site scripting (XSS)

8.7 HIGHPublic exploitEPSS 0.49%
  1. Published8 Nov 2025

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. In versions 0.6.34 and below, the functionality that inserts custom prompts into the chat window is vulnerable to DOM XSS when 'Insert Prompt as Rich Text' is enabled, since the prompt body is assigned to the DOM sink .innerHtml without sanitisation. Any user with permissions to create prompts can abuse this to plant a payload that could be triggered by other users if they run the corresponding / command to insert the prompt. This issue is fixed in version 0.6.35.

CVSS 3.1 breakdown

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

Affected products

Openwebui Open Webui< 0.6.35

Remediation

Fixed in
Openwebui Open Webui≥ 0.6.35

References

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Frequently asked

Is CVE-2025-64495 being actively exploited?

CVE-2025-64495 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.49%.

How severe is CVE-2025-64495?

CVE-2025-64495 has a CVSS 3.1 base score of 8.7, rated high. EPSS estimates a 0.49% probability of exploitation.

Which products are affected by CVE-2025-64495?

Affected products include Openwebui Open Webui.

How do I fix CVE-2025-64495?

Upgrade affected software to a fixed version, for example Openwebui Open Webui 0.6.35 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-64495 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.