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CVE-2026-109297

7.1 high SSVC exploitation: poc Published
NVD · CVE.org

Open WebUI 0.11.0 before 0.11.4 contains a denial of service vulnerability in the automation recurrence-rule validator, whose sub-daily frequency guard parses rule text more strictly than the calendar library that executes it. Users permitted to create automations can submit whitespace-folded rules (or, in 0.11.0, lowercase frequencies or omitted RRULE prefixes) that expand per-second synchronously, blocking the shared event loop for minutes per request and on every scheduler poll.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 21:57
  2. CwesCWE-400 → CWE-400, CWE-436NVD modified 2026-10-23 22:16
  3. StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 15:55
  4. First seenCVSS 7.1NVD modified 2026-10-12 17:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3