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Vulnerabilities

Security fix · CVE-2025-64495

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline.

Published Nov 8, 2025 · catalog updated Nov 10, 2025 · Open WebUI is a

Last checked Oct 31, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-64495. EPSS is 0.49%. Act only if a listed version of Open WebUI is a is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Open WebUI is a).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.49%
Remediation
Version ranges on file
Affected products
vendor open-webui open-webui < 0.6.35

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor open-webui open-webui < 0.6.35< 0.6.35

How to fix CVE-2025-64495

  • Upgrade

    CVE-2025-64495 lists a fix boundary at 0.6.35. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 0.6.35

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-64495. EPSS is 0.49%. Act only if a listed version of Open WebUI is a is installed.

Which versions are affected?

Compare what you have installed with open-webui open-webui < 0.6.35 < 0.6.35. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.49%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 8, 2025 · EUVD

    Detected

    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 ab

  2. Nov 10, 2025 · EUVD

    Updated

    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 ab

Sources

  • CVE.orgVulnerability recordCVE-2025-64495

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-38257

    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 pro

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 31, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 25, 2026
  • EUVDOct 25, 2026