Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
open-webui open-webui — Open WebUI: Any authenticated user can read other users' private notes via Socket.IO
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H L N U H N N 5.3 .0032 24.9 —
AFFECTED
Product Versions Fixed
open-webui < 0.8.11 – —
TIMELINE
Jun 11 Reserved by GitHub_M
Jun 23 EXPLOIT PUBLISHED — CVE-2026-54022 (open-webui). Public exploit reference added.
Jun 23 Published (CNA: GitHub_M)
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 11, 2026 | Reserved | Reserved by GitHub_M |
| June 23, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-54022 (open-webui). Public exploit reference added. |
| June 23, 2026 | Published | Published (CNA: GitHub_M) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| open-webui | open-webui | — | < 0.8.11 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54022 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.