CVE-2026-44566
CVE-2026-44566 is a high-severity vulnerability in Openwebui Open Webui with a CVSS 3.x base score of 7.3. 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-22.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- EPSS exploit prediction: 0% (26th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30641
- Weakness: CWE-22
- Affected product: Openwebui Open Webui
- Published:
- Last modified:
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.
Frequently asked questions
- What is CVE-2026-44566?
- Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.
- How severe is CVE-2026-44566?
- CVE-2026-44566 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-44566 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-44566?
- CVE-2026-44566 affects Openwebui Open Webui. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-44566?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-44566 have an EU (EUVD) identifier?
- Yes. CVE-2026-44566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30641.
- When was CVE-2026-44566 published?
- CVE-2026-44566 was published on 2026-05-15 and last updated on 2026-06-17.
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-2024-7053 — Critical (CVSS 9.0): A vulnerability in open-webui/open-webui version 0.3.8 allows an attacker with a user-level account to perform a…
- 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…
All CVEs affecting Openwebui Open Webui →
Other CWE-22 (Path Traversal) vulnerabilities
- CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
- CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
- CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
- CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
- CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
- CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…