CVE-2026-54022
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_ (underscore) instead of note: (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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
open-webuiPyPI | < 0.8.11 | 0.8.11 |
Affected products
3cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: <0.8.11
- (no CPE)range: <= 0.8.10
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-8788-j68r-3cghghsaADVISORY
- github.com/open-webui/open-webui/security/advisories/GHSA-8788-j68r-3cghnvdVendor AdvisoryExploitWEB
- nvd.nist.gov/vuln/detail/CVE-2026-54022ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/open-webui/PYSEC-2026-2712.yamlghsaWEB
- pypi.org/project/open-webuighsaWEB
News mentions
1- Open WebUI: 16 CVEs Disclosed in Single-Day Batch, Many Bypassing Earlier PatchesVypr Intelligence · Jun 17, 2026