CVE-2026-44551
CRITICAL
INFO
Priority: 0.13
BB Relevance:
78/100
Published: 2026-05-15
Modified: 2026-11-11
First seen: 2026-11-11
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
None
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 (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| openwebui | open_webui | < 0.9.0 |
References & Advisories (1)
Exploit
Vendor Advisory