High 7.7Published Jul 9, 2026

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

Updated under an hour ago (Oct 27, 2026, 6:00 AM ET)

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It affects open-webui and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-94, CWE-200, CWE-639, CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

open-webui open-webui open_webui:open_webui (from the name)	before 0.10.0	CNA record
openwebui open_webui openwebui:open_webui	before 0.10.0	NVD

References

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-74h3-cxq7-vc5q	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/open-webui/open-webui/pull/25763	x-refsource-misc, issue-tracking, patch
https://github.com/open-webui/open-webui/commit/386ac958144dbbbf0aa6e268070d72b681a318aa	x-refsource-misc, patch
https://github.com/open-webui/open-webui/releases/tag/v0.10.0	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.