Medium severity5.4GHSA Advisory· Published May 15, 2026· Updated May 19, 2026
CVE-2026-44558
CVE-2026-44558
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the channel router does not call filter_allowed_access_grants on either create or update paths. A non-admin user who can create group channels (or who owns a channel) can submit arbitrary access grants — including public wildcard grants — and those grants are stored verbatim, bypassing the admin's permission framework. This vulnerability is fixed in 0.9.0.
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 | < 0.9.0 | 0.9.0 |
Affected products
2<= 0.8.12+ 1 more
- (no CPE)range: <= 0.8.12
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: <0.9.0
Patches
Vulnerability mechanics
References
3- github.com/open-webui/open-webui/security/advisories/GHSA-7rjh-px4v-5w55nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-7rjh-px4v-5w55ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44558ghsaADVISORY
News mentions
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