← Vulnerability feed

Vulnerability record · CVE-2026-44551 · published 15 May 2026

CVE-2026-44551: Openwebui open webui improper authentication vulnerability

Openwebui · Open Webui

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the LDAP authentication endpoint does not validate that the submitted password is non-empty before performing a Simple Bind against the LDAP server. The LdapForm Pydantic model accepts password: str with no minimum length constraint, so an empty string passes validation. The subsequent Connection.bind() call succeeds on vulnerable LDAP servers, and the application issues a full session token for the target user. This vulnerability is fixed in 0.9.0.

9.1 CVSS 3.1 Critical EPSS 1.6% · top 24.7% CWE-287 · Improper authentication
9.1CVSS 3.1 base score
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the LDAP authentication endpoint does not validate that the submitted password is non-empty before performing a Simple Bind against the LDAP server. The LdapForm Pydantic model accepts password: str with no minimum length constraint, so an empty string passes validation. The subsequent Connection.bind() call succeeds on vulnerable LDAP servers, and the application issues a full session token for the target user. This vulnerability is fixed in 0.9.0.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4 ExploitVendor Advisory

Track CVE-2026-44551 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-44566Openwebui open webui path traversal vulnerabilityOpen WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp,…EPSS 0.46%9.0CVE-2026-56400Openwebui open webui insufficient session expiration vulnerabilityopen-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with allow_origins=* and authenticated …EPSS 0.52%9.0CVE-2026-59214Openwebui open webui cross-site scripting vulnerabilityOpen WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodid…EPSS 0.42%9.0CVE-2026-59216Openwebui open webui code injection vulnerabilityOpen 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 ex…EPSS 0.45%9.0CVE-2024-8017Openwebui open webui cross-site scripting vulnerabilityAn XSS vulnerability exists in open-webui/open-webui versions <= 0.3.8, specifically in the function that constructs the HTML for tooltips. This vuln…EPSS 0.60%8.9CVE-2024-7044Openwebui open webui cross-site scripting vulnerabilityA Stored Cross-Site Scripting (XSS) vulnerability exists in the chat file upload functionality of open-webui/open-webui version 0.3.8. An attacker ca…EPSS 0.52%8.8CVE-2026-70482Openwebui open webui improper authentication vulnerabilityOpen WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.0, when ENABLE_OAUTH_TOKEN_EXCHANGE=True,…EPSS 0.57%8.8CVE-2026-45672Openwebui open webui incorrect authorization vulnerabilityOpen WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.12, the /api/v1/utils/code/execute en…EPSS 0.59%

Source: NIST National Vulnerability Database (record CVE-2026-44551), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.