CVE-2026-44617: Apache Zeppelin

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

LDAP filter injection vulnerability in Apache Zeppelin. LdapRealm used RFC 4514 distinguished-name escaping when constructing LDAP search filters instead of RFC 4515 filter escaping, leaving special filter characters insufficiently escaped.                   This is an incomplete fix of CVE-2024-31867. This issue affects Apache Zeppelin versions 0.11.1, 0.11.2, and 0.12.0. Users are recommended to upgrade to version 0.12.1, which fixes this issue.

Affected products

• Apache Zeppelin: from 0.11.1, before 0.12.1 (fixed in 0.12.1)

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