What’s Vulnerable › Vulnerabilities

CVE-2026-59216: Open WebUI: Cross-user code-interpreter and tool execution via unvalidated Socket.IO event-caller session_id

• Severity: critical (CVSS 9.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-09 · updated 2026-07-13
• Weakness: CWE-94

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, get_event_call delivered execute:python and execute:tool Socket.IO events to a client-supplied session_id after checking only that the session was connected, allowing authenticated users who learned another socket ID through ydoc:document:join to run code interpreter Python or tools in that user session. This issue is fixed in version 0.10.0.

Affected products

• open-webui: before 0.10.0 — fixed in 0.10.0

How to fix

Upgrade to a fixed version: open-webui 0.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/open-webui/open-webui/commit/386ac958144dbbbf0aa6e268070d72b681a318aa
• https://github.com/open-webui/open-webui/pull/25763
• https://github.com/open-webui/open-webui/releases/tag/v0.10.0
• https://github.com/open-webui/open-webui/security/advisories/GHSA-74h3-cxq7-vc5q
• https://github.com/open-webui/open-webui/security/advisories/GHSA-74h3-cxq7-vc5q

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