Open WebUI up to 0.10.x Automation automations.py infinite loop

Summaryinfo

A vulnerability was found in Open WebUI up to 0.10.x. It has been classified as problematic. This vulnerability affects unknown code of the file backend/open_webui/utils/automations.py of the component Automation. Performing a manipulation results in infinite loop. This vulnerability is identified as CVE-2026-70489. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Open WebUI up to 0.10.x. It has been classified as problematic. This affects an unknown code block of the file backend/open_webui/utils/automations.py of the component Automation. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

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/open_webui/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 find the next run. A single FREQ=MINUTELY rule enumerates roughly a quarter-century of occurrences synchronously on the event loop that also serves scheduler, HTTP, and WebSocket traffic, and the scheduler recomputes the next run for every claimed row on each poll. This causes availability impact for every other user of the instance. This issue is fixed in 0.11.0.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-70489 since 08/04/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 0.11.0 eliminates this vulnerability.

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Productinfo

Name

• Open WebUI

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10

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CPE 2.2info

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