THREATPORT/VULNERABILITY/CVE-2026-34222
HIGH SEVERITY

CVE-2026-34222

Open Webui vulnerability

CVSS
7.7
EPSS
5.3%
EPSS pct
92th
Exploited
No known
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11.
Affected vendor
Openwebui
Affected product
Open Webui
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness type (CWE)
Published
2026-04-01

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 5.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2026-34222

  • Confirm whether Openwebui Open Webui is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-34222.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-34222

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2026-34222 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2026-34222?

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