CVE-2026-45385
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, an IDOR vulnerability exists in the Channels feature of Open WebUI, allowing any channel member to modify messages sent by other members (including administrators) within the same channel. In the update_message_by_id function, for group or dm type channels, only the caller's membership in the channel is checked via the is_user_channel_member function, without verifying message ownership. This allows any channel member to modify messages sent by other members within the same channel. This vulnerability is fixed in 0.9.5.
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 | < 0.9.5 | 0.9.5 |
Affected products
2< 0.9.5+ 1 more
- (no CPE)range: < 0.9.5
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: <0.9.5
Patches
Vulnerability mechanics
References
4- github.com/open-webui/open-webui/security/advisories/GHSA-wwhq-cx22-f7vvnvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-wwhq-cx22-f7vvghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-45385ghsaADVISORY
- github.com/open-webui/open-webui/releases/tag/v0.9.5ghsaWEB
News mentions
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