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Vulnerability details: VCID-pkds-1xgn-q3bv
Vulnerability ID VCID-pkds-1xgn-q3bv
Aliases CVE-2026-44551
GHSA-2r4p-jpmg-48f4
Summary 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.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-287 Improper Authentication
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.02638 https://api.first.org/data/v1/epss?cve=CVE-2026-44551
cvssv3.1 9.1 https://github.com/open-webui/open-webui
generic_textual CRITICAL https://github.com/open-webui/open-webui
cvssv3.1 9.1 https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4
generic_textual CRITICAL https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4
ssvc Track https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4
cvssv3.1 9.1 https://nvd.nist.gov/vuln/detail/CVE-2026-44551
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2026-44551
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-44551
https://github.com/open-webui/open-webui
https://nvd.nist.gov/vuln/detail/CVE-2026-44551
GHSA-2r4p-jpmg-48f4 https://github.com/advisories/GHSA-2r4p-jpmg-48f4
GHSA-2r4p-jpmg-48f4 https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/open-webui/open-webui
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2026-05-18T14:33:19Z/ Found at https://github.com/open-webui/open-webui/security/advisories/GHSA-2r4p-jpmg-48f4
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-44551
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.86039
EPSS Score 0.02638
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:42:47.351883+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/44xxx/CVE-2026-44551.json 38.6.0