Is CVE-2026-54022 in the CISA KEV catalog?

No. CVE-2026-54022 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-54022?

CVE-2026-54022 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2026-54022?

CVE-2026-54022 has an EPSS score of 0.27% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54022?

Upgrade open webui to 0.8.11 or later.

CVE & CISA-KEV Catalog

CVE-2026-54022

MEDIUM

5.3

CVSS v3

NVD

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, the ydoc:document:join Socket.IO handler checks note ownership only when the document_id starts with note: (colon). However, the YdocManager storage layer normalizes all document IDs by replacing colons with underscores (document_id.replace(":", "_")). An attacker can join a document room using note_<id> (underscore) instead of note:<id> (colon), bypassing the authorization check entirely while accessing the same underlying Yjs document. The server then returns the full document state, leaking the victim's private note contents. This vulnerability is fixed in 0.8.11.

CWE-706 CWE-863Incorrect Authorization

How to fix

Remediation Available

open webuiNVD

Affected:< 0.8.11Fixed in:0.8.11CVE-2026-54022derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.27%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Exploit1

github.com

Embed a live status badge for CVE-2026-54022

Markdown

[![CVE-2026-54022](https://tridentstack.com/cve/badge/CVE-2026-54022.svg)](https://tridentstack.com/cve/CVE-2026-54022)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-54022"><img src="https://tridentstack.com/cve/badge/CVE-2026-54022.svg" alt="CVE-2026-54022"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-25.