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CVE-2025-65959

Openwebui Open Webui cross-site scripting (XSS)

8.7 HIGHPublic exploitEPSS 0.24%
  1. Published4 Dec 2025

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.37, a Stored XSS vulnerability was discovered in Open-WebUI's Notes PDF download functionality. An attacker can import a Markdown file containing malicious SVG tags into Notes, allowing them to execute arbitrary JavaScript code and steal session tokens when a victim downloads the note as PDF. This vulnerability can be exploited by any authenticated user, and unauthenticated external attackers can steal session tokens from users (both admin and regular users) by sharing specially crafted markdown files. This vulnerability is fixed in 0.6.37.

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< 0.6.37

Remediation

Fixed in
Openwebui Open Webui≥ 0.6.37

References

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Frequently asked

Is CVE-2025-65959 being actively exploited?

CVE-2025-65959 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.24%.

How severe is CVE-2025-65959?

CVE-2025-65959 has a CVSS 3.1 base score of 8.7, rated high. EPSS estimates a 0.24% probability of exploitation.

Which products are affected by CVE-2025-65959?

Affected products include Openwebui Open Webui.

How do I fix CVE-2025-65959?

Upgrade affected software to a fixed version, for example Openwebui Open Webui 0.6.37 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-65959 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.