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Vulnerabilities

Vulnerability · CVE-2026-26193

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

Published Feb 19, 2026 · catalog updated Feb 19, 2026 · Open WebUI is a

Last checked Nov 12, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-26193. EPSS is 0.23%. 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
High7.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.23%
Remediation
Version ranges on file
Affected products
vendor open-webui open-webui < 0.6.44

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the property on a response message, the content of which is loaded into an iFrame with a sandbox that has and set, ignoring the "iframe Sandbox Allow Same Origin" configuration. This enables stored XSS on the affected chat. This also triggers when the chat is in the shared format. The result is a shareable link containing the payload that can be distributed to any other users on the instance. Version 0.6.44 fixes the issue.

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 < 0.6.44< 0.6.44

How to fix CVE-2026-26193

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-2026-26193. EPSS is 0.23%. 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 < 0.6.44 < 0.6.44. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.23%. 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. Feb 19, 2026 · EUVD

    Detected

    Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the property on a response message, the content of which is loaded into an iFrame with a sandbox that has and set, ignoring the "iframe Sandbox Allow Same Origin" configuration. This enables stored XSS on the affected chat. This

  2. Feb 19, 2026 · EUVD

    Updated

    Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the property on a response message, the content of which is loaded into an iFrame with a sandbox that has and set, ignoring the "iframe Sandbox Allow Same Origin" configuration. This enables stored XSS on the affected chat. This

Sources

  • CVE.orgVulnerability recordCVE-2026-26193

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-26193

    30-day exploitation probability 0.23%

    first.org
  • EUVDVulnerability recordEUVD-2026-7981

    Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the property on a response message, the content of which is loaded into an iFrame with a sandbox that has and

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 12, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 9, 2026
  • CVE.orgNov 9, 2026
  • EUVDNov 9, 2026