How severe is CVE-2026-59217?

CVE-2026-59217 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-59217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-59217?

CVE-2026-59217 affects Openwebui Open Webui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-59217?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-59217 published?

CVE-2026-59217 was published on 2026-07-09 and last updated on 2026-07-14.

CVE-2026-59217

CVE-2026-59217 is a medium-severity vulnerability in Openwebui Open Webui with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Openwebui Open Webui
Published: 2026-07-09
Last modified: 2026-07-14

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the file upload path accepted metadata.knowledge_id and auto-linked uploaded files to a target knowledge base without applying the write-access check used by /api/v1/knowledge//file/add, allowing read-only knowledge-base users to add arbitrary files. This issue is fixed in version 0.10.0.

Frequently asked questions

What is CVE-2026-59217?: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the file upload path accepted metadata.knowledge_id and auto-linked uploaded files to a target knowledge base without applying the write-access check used by /api/v1/knowledge//file/add, allowing read-only knowledge-base users to add arbitrary files. This issue is fixed in version 0.10.0.
How severe is CVE-2026-59217?: CVE-2026-59217 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-59217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-59217?: CVE-2026-59217 affects Openwebui Open Webui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-59217?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-59217 published?: CVE-2026-59217 was published on 2026-07-09 and last updated on 2026-07-14.

References

Affected products (1)

cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*

More vulnerabilities in Openwebui Open Webui

CVE-2026-44551 — Critical (CVSS 9.1): Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the…
CVE-2024-8017 — Critical (CVSS 9.0): An XSS vulnerability exists in open-webui/open-webui versions <= 0.3.8, specifically in the function that constructs…
CVE-2024-7044 — High (CVSS 8.9): A Stored Cross-Site Scripting (XSS) vulnerability exists in the chat file upload functionality of open-webui/open-webui…
CVE-2026-45672 — High (CVSS 8.8): Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.12, the…
CVE-2026-0766 — High (CVSS 8.8): Open WebUI load_tool_module_by_id Command Injection Remote Code Execution Vulnerability. This vulnerability allows…
CVE-2026-0765 — High (CVSS 8.8): Open WebUI PIP install_frontmatter_requirements Command Injection Remote Code Execution Vulnerability. This…

All CVEs affecting Openwebui Open Webui →

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-65667 — Critical (CVSS 10.0): Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-48168 — Critical (CVSS 10.0): PraisonAI is a multi-agent teams system. In versions prior to 4.6.40, the bundled Claude GitHub Actions workflow is…
CVE-2026-66012 — Critical (CVSS 10.0): SiYuan before v3.7.2 contains a missing authorization vulnerability in the POST /mcp kernel endpoint, which is gated…
CVE-2026-58275 — Critical (CVSS 10.0): Missing authorization in Azure DNS allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…

Browse all CWE-862 (Missing Authorization) vulnerabilities →