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CVE-2025-64496

Openwebui Open Webui remote code execution

7.3 HIGHPublic exploitEPSS 7.23%
  1. Published8 Nov 2025

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Versions 0.6.224 and prior contain a code injection vulnerability in the Direct Connections feature that allows malicious external model servers to execute arbitrary JavaScript in victim browsers via Server-Sent Event (SSE) execute events. This leads to authentication token theft, complete account takeover, and when chained with the Functions API, enables remote code execution on the backend server. The attack requires the victim to enable Direct Connections (disabled by default) and add the attacker's malicious model URL, achievable through social engineering of the admin and subsequent users. This issue is fixed in version 0.6.35.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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-2025-64496 being actively exploited?

CVE-2025-64496 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 7.23%.

How severe is CVE-2025-64496?

CVE-2025-64496 has a CVSS 3.1 base score of 7.3, rated high. EPSS estimates a 7.23% probability of exploitation.

Which products are affected by CVE-2025-64496?

Affected products include Openwebui Open Webui.

How do I fix CVE-2025-64496?

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-2025-64496 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.