CVE-2026-70487Medium· 5.3▾ SunlitOpen 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 a…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.3%
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.
open_webui >= 0.8.8, < 0.11.0Upgrade past the affected range:
open_webui 0.11.0Affected packages:
open-webui >= 0.8.8, <= 0.10.2Patched in:
open-webui 0.11.0Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-70483Low· 3.1Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
CVE-2026-70484Medium· 4.3Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
CVE-2026-70489Medium· 6.5Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
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