Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11.
CVE-2026-34222
This high-severity CVE scores 7.7 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.7
- EG Score
- 7.7(medium)
- EPSS
- 91.6%
- KEV
- Not listed
Published
April 1, 2026
Last Modified
April 15, 2026
References (3)
- security-advisories@githubhttps://github.com/open-webui/open-webui/releases/tag/v0.8.11
- security-advisories@githubhttps://github.com/open-webui/open-webui/security/advisories/GHSA-7429-hxcv-268m
- af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2026/Apr/4
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| open-webui | 0.1.124 ... 0.8.9 (149 versions) | 0.8.11 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 35× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
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- 2026-06-21 01:59 UTCEPSS rescore
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- 2026-06-11 22:23 UTCEG score recompute
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- 2026-06-07 11:16 UTCEG score recompute
- 2026-06-06 13:47 UTCEPSS rescore
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- 2026-05-26 07:18 UTCEPSS rescore
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- 2026-05-23 00:08 UTCEG score recompute
- 2026-05-20 22:38 UTCEPSS rescore
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- 2026-05-20 19:35 UTCEG score recompute
- 2026-05-20 11:22 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2026-34222?
When was CVE-2026-34222 disclosed?
Is CVE-2026-34222 actively exploited?
What is the CVSS score of CVE-2026-34222?
How do I remediate CVE-2026-34222?
Dependency Blast Radius
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