CVE-2026-34222

Q: How do I fix CVE-2026-34222?

Upgrade open webui to 0.8.11 or later.

Q: Is CVE-2026-34222 being actively exploited?

Not that we know of. CVE-2026-34222 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 5.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 92% of all scored CVEs.

Q: How severe is CVE-2026-34222?

CVE-2026-34222 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-34222 affect?

Published advisories record a fix for open webui (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 92th pctl

7.7

CVSS v3

NVD

Description

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.

CWE-285

How to fix

Remediation Available

open webuiNVD

Affected:< 0.8.11Fixed in:0.8.11CVE-2026-34222derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploit Intelligence

5.27%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Exploit1

seclists.org

Vendor Advisory1

github.com

Release Notes1

github.com

Related Vulnerabilities

Other CWE-285 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-29927	Critical	9.1	99%	-	Fix
CVE-2023-32707	High	8.8	79%	-	Fix
CVE-2021-28799	Critical	10.0	78%	KEV + Ransom	Fix
CVE-2023-48241	High	7.5	73%	-	Fix
CVE-2023-22480	High	7.3	67%	-	Fix
CVE-2022-3229	Critical	9.8	66%	-	-

Common questions

How do I fix CVE-2026-34222?

Upgrade open webui to 0.8.11 or later.

Is CVE-2026-34222 being actively exploited?

Not that we know of. CVE-2026-34222 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 5.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 92% of all scored CVEs.

How severe is CVE-2026-34222?

CVE-2026-34222 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-34222 affect?

Published advisories record a fix for open webui (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-34222

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-15.