CVE-2026-44551

critical · 9.1

A public exploit / detection template exists

Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →

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

1.5%

EPSS (exploit prob.)

72nd

EPSS percentile

2026-05-15

Published

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

Weaknesses

CWE-287

Affected products

Vendor	Product	Affected versions
openwebui	open_webui	< 0.9.0

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-44551