Apache Zeppelin up to 0.12.0 User Search ldap injection

Summaryinfo

A vulnerability was found in Apache Zeppelin up to 0.12.0. It has been rated as problematic. This issue affects some unknown processing of the component User Search. The manipulation leads to ldap injection. This vulnerability is traded as CVE-2026-44616. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Apache Zeppelin up to 0.12.0. It has been rated as problematic. This issue affects an unknown function of the component User Search. The manipulation with an unknown input leads to a ldap injection vulnerability. Using CWE to declare the problem leads to CWE-90. The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component. Impacted is confidentiality. The summary by CVE is:

LDAP injection vulnerability in Apache Zeppelin. ActiveDirectoryGroupRealm constructed LDAP search filters without escaping user-controlled input, allowing an authenticated attacker to inject LDAP filter syntax through the user-search endpoint                   and potentially expose directory information. The role-lookup path was also affected after successful LDAP authentication. This issue affects Apache Zeppelin versions 0.6.0 through 0.12.0. Users are recommended to upgrade to version 0.12.1, which                   fixes this issue.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-44616 since 05/07/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/30/2026). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

Upgrading to version 0.12.1 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Zeppelin

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12.0

License

• open-source

Website

• Vendor: https://www.apache.org/
• Product: https://github.com/apache/zeppelin/

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