{"items":[{"id":"NVI-00016009","kind":"vulnerability","title":"Open WebUI IDOR: Calendar event re-parenting allows writing events into another user's calendar","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-f3g7-59qc-pqg6","CVE-2026-54006"],"plain_summary":"GitHub lists this reviewed advisory for open-webui. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0ead3b8c7801121bcdadf08341c846e5"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-20T21:03:11.000Z","value":"4.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-02f70f20ca9ded7d79f5a866a168c4ff"},{"kind":"CVSS","as_of":"2026-06-25T13:41:57.843Z","value":"4.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-0ead3b8c7801121bcdadf08341c846e5"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-02f70f20ca9ded7d79f5a866a168c4ff","url":"https://github.com/advisories/GHSA-f3g7-59qc-pqg6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f3g7-59qc-pqg6","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:47:44.783Z"},{"id":"sr-0ead3b8c7801121bcdadf08341c846e5","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54006","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54006","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:48:05.462Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-02f70f20ca9ded7d79f5a866a168c4ff"],"technology":"open-webui","known_exclusions":[],"conditions_summary":"### Summary\n\n`POST /api/v1/calendars/events/{event_id}/update` validates that the caller has **write** access to the calendar the event *currently* belongs to, but does not validate the **destination** `calendar_id` supplied in the request body. The model layer then persists the new `calendar_id` unconditionally.\n\nA regular `user`-role account can therefore create an event in their own calendar and immediately move it into any other user's calendar whose ID they know — bypassing the authorization check that `create_event` correctly performs. This is reachable on **default configuration**: `ENABLE_CALENDAR` and `USER_PERMISSIONS_FEATURES_CALENDAR` both default to `True`.\n\n\n### Details\n### Sink — missing destination check\n\n`backend/open_webui/routers/calendar.py:283-297`\n\n```python\n@router.post('/events/{event_id}/update', response_model=CalendarEventModel)\nasync def update_event(\n    request: Request, event_id: str, form_data: CalendarEventUpdateForm,\n    user: UserModel = Depends(get_verified_user)\n):\n    await check_calendar_permission(request, user)\n    event = await CalendarEvents.get_event_by_id(event_id)\n    if not event:\n        raise HTTPException(status_code=404, detail='Ev","public_affected_ranges":["<= 0.9.5"]}],"null_published_at":"2026-11-08T19:53:44.025Z","source_updated_at":"2026-07-20T21:03:11.000Z","source_disclosed_at":"2026-06-17T14:09:53.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-04T02:47:44.783Z"},{"id":"NVI-00016009","kind":"vulnerability","title":"Open WebUI IDOR: Calendar event re-parenting allows writing events into another user's calendar","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f3g7-59qc-pqg6","CVE-2026-54006"],"plain_summary":"GitHub lists this reviewed advisory for open-webui. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-02f70f20ca9ded7d79f5a866a168c4ff"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-20T21:03:11.000Z","value":"4.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-02f70f20ca9ded7d79f5a866a168c4ff"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-02f70f20ca9ded7d79f5a866a168c4ff","url":"https://github.com/advisories/GHSA-f3g7-59qc-pqg6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f3g7-59qc-pqg6","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:47:44.783Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-02f70f20ca9ded7d79f5a866a168c4ff"],"technology":"open-webui","known_exclusions":[],"conditions_summary":"### Summary\n\n`POST /api/v1/calendars/events/{event_id}/update` validates that the caller has **write** access to the calendar the event *currently* belongs to, but does not validate the **destination** `calendar_id` supplied in the request body. The model layer then persists the new `calendar_id` unconditionally.\n\nA regular `user`-role account can therefore create an event in their own calendar and immediately move it into any other user's calendar whose ID they know — bypassing the authorization check that `create_event` correctly performs. This is reachable on **default configuration**: `ENABLE_CALENDAR` and `USER_PERMISSIONS_FEATURES_CALENDAR` both default to `True`.\n\n\n### Details\n### Sink — missing destination check\n\n`backend/open_webui/routers/calendar.py:283-297`\n\n```python\n@router.post('/events/{event_id}/update', response_model=CalendarEventModel)\nasync def update_event(\n    request: Request, event_id: str, form_data: CalendarEventUpdateForm,\n    user: UserModel = Depends(get_verified_user)\n):\n    await check_calendar_permission(request, user)\n    event = await CalendarEvents.get_event_by_id(event_id)\n    if not event:\n        raise HTTPException(status_code=404, detail='Ev","public_affected_ranges":["<= 0.9.5"]}],"null_published_at":"2026-11-04T10:04:27.863Z","source_updated_at":"2026-07-20T21:03:11.000Z","source_disclosed_at":"2026-06-17T14:09:53.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-04T02:47:44.783Z"}],"next_cursor":null,"snapshot_revision":"42594"}