VULNERABILITY INTELLIGENCE

CVE-2026-44551

CVSS score9.1 CRITICAL
EPSS probability1.46%
CISA KEVNot currently listed
Published2026-05-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-287
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references