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CVE-2026-44551

⛔ critical
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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 sess

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 Score
9.1
Critical
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-15
First Seen: 2026-05-17
📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 87.6% of all 355,046 vulnerabilities in our database.

#44,102
Top 25% most severe
Severity Percentile
đŸŽ¯ CISA SSVC Assessment Updated: May 18, 2026
🔍 Exploitation Status
None
No known exploits
⚙ī¸ Automatable
YES
Can be exploited automatically
đŸ’Ĩ Technical Impact
Total
Complete system compromise possible
SSVC data provided by CISA
Last Modified 2026-05-18
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE IDs (Weakness Types)
CWE-287

đŸ“Ļ Affected Products 1

Vendor Product Status Affected Versions
openwebui open_webui Affected
< 0.9.0

🔗 References 1

https://github.com/open-webui/open-webui/security/ad...
Exploit Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-56398 ⚠ī¸ high 7.3 0.3 Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the ... 2026-07-15
CVE-2026-56400 ⚠ī¸ high 8.3 0.3 open-webui before 0.3.14 contains a cross-origin resource sharing misconfiguration allowing arbitrary origins with allow... 2026-07-15
CVE-2026-59212 đŸ”ļ medium 5.4 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, _verify_... 2026-07-09
CVE-2026-59213 ℹī¸ low 3.5 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 before 0.10.0, get_all... 2026-07-09
CVE-2026-59214 ⚠ī¸ high 7.3 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs c... 2026-07-09
CVE-2026-59215 ℹī¸ low 3.1 0.3 Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, channel thread pa... 2026-07-09
These CVEs affect the same products