CVE-2026-44616: Apache Zeppelin

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Zeppelin: from 0.6.0, before 0.12.1 (fixed in 0.12.1)

Published 2026-07-30. Last modified 2026-08-05.