Medium severity5.3NVD Advisory· Published Aug 4, 2026· Updated Sep 18, 2026
CVE-2026-70487
CVE-2026-70487
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file id could have the builtin knowledge tools return indexed chunks from that file, causing a read-only cross-user confidentiality loss while leaving knowledge-base permissions and saved workspace model validation unaffected. This issue is fixed in 0.11.0.
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 | >= 0.8.8, < 0.11.0 | 0.11.0 |
Affected products
1- Range: 0.8.8 - 0.11.0
Patches
Vulnerability mechanics
References
4- github.com/open-webui/open-webui/commit/305880f2e2aeb2dda2f4b2a18a20bdcd558f7134nvdPatchWEB
- github.com/open-webui/open-webui/security/advisories/GHSA-6xhv-rxhv-pwm4nvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-6xhv-rxhv-pwm4ghsaADVISORY
- github.com/open-webui/open-webui/releases/tag/v0.11.0nvdRelease NotesWEB
News mentions
1- Open WebUI: 17 Vulnerabilities Disclosed Together, Patched in 0.11.0Vypr Intelligence · Aug 4, 2026