EUVD-2026-97599

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 rul...

CVE-2026-109297

The Open WebUI application versions 0.11.0 before 0.11.4 are vulnerable to a Denial of Service (DoS) attack via the automation recurrence-rule validator . The root cause is a discrepancy where the sub-daily frequency guard parses rule text more strictly than the underlying calendar library used f...

CVE-2026-109297 Open WebUI 0.11.0 before 0.11.4 Denial of Service via Automation Recurrence Rules

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 rul...

PT-2026-76477

Summary In every affected release, automation recurrence parsing anchors minutely and hourly rules at a fixed date of 2000-01-01 and then walks forward one interval at a time to find the next run. A single FREQ=MINUTELY rule therefore enumerates roughly a quarter-century of occurrences,...

Regular Expression Denial of Service (ReDoS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS through the automation recurrence rule process. An attacker can cause the application to become unresponsive and deny service to all users by submitting specially...

CVE-2026-70489 Open WebUI: Instance-wide stall via automation recurrence rules that force multi-second parsing

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

EUVD-2026-52917

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

CVE-2026-70489

Technical details about CVE-2026-70489 are not publicly available in the provided documents. Monitor for updates.

PT-2026-67912

Summary In every affected release, automation recurrence parsing anchors minutely and hourly rules at a fixed date of 2000-01-01 and then walks forward one interval at a time to find the next run. A single FREQ=MINUTELY rule therefore enumerates roughly a quarter-century of occurrences,...

CVE-2026-70489: Uncontrolled Resource Consumption

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

PT-2026-67857

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.10.0 Description Automation recurrence parsing in backend/open webui/utils/automations.py anchors minutely and hourly rules to a fixed date of 2000-01-01. When calculating the next run, the system walks...