LDAP Injection in Apache Zeppelin
CVE-2026-44616
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.
EPSS: 0.004 (37.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Apache Zeppelin
- Apache Software Foundation Zeppelin — versions 0.6.0
Weakness classification (CWE)
References
- security@apache.org (Patch, patch, Issue Tracking)
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-44616?
- CVE-2026-44616 is a medium-severity vulnerability in Apache Zeppelin, classified under LDAP Injection. CVSS score: 6.5/10. Published 2026-07-30.
- How severe is CVE-2026-44616?
- Medium severity. CVSS v3 base score is 6.5 out of 10.