Summary Open WebUI v0.9.5 lets an authenticated user attach arbitrary file_id values to their own chat message without checking whether they own or can read those files. If the attacker then shares that chat and grants…
| CVE ID | CVE-2026-54010 |
| Vendor | pip |
| Affected Product | open-webui |
| Vulnerability Type | Vulnerability |
| CVSS Score | 8.3 (HIGH) |
| Actively Exploited | ❌ No known exploitation |
| Patch Status | See Vendor Advisory → |
| Reported By | CYBERDUDEBIVASH SENTINEL APEX Intelligence (via github_advisories) |
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v0.9.5 lets an authenticated user attach arbitrary file_id values to their own chat message without checking whether they own or can read those files. If the attacker then shares that chat and grants themselves read access, has_access_to_file() treats the victim file as accessible through the shared chat, and the file endpoints read or delete the victim file.file_id can make Open WebUI authorize, through an attacker-owned shared chat: - reading the victim file via GET /api/v1/files/{id}/content, andDELETE /api/v1/files/{id}.Sigma rules, YARA signatures, IOC table, and SIEM queries for Splunk, Elastic, Sentinel, and Chronicle — deployable in 5 minutes.