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.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security@apache.org

Published

2026-07-30

Last modified

2026-10-23

Weaknesses

CWE-90

Affected products

• Zeppelin (Apache)
• Apache Zeppelin (Apache Software Foundation)

References

• https://github.com/apache/zeppelin/pull/5226
• https://lists.apache.org/thread/p6llqpvcszpg1wc8kx5ncfkdbms3g0rn
• http://www.openwall.com/lists/oss-security/2026/07/30/3