What’s Vulnerable › Vulnerabilities

CVE-2026-44616: Apache Zeppelin: LDAP injection in ActiveDirectoryGroupRealm filter construction

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-30 · updated 2026-10-23
• Weakness: CWE-90

Description

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 Software Foundation Apache Zeppelin: from 0.6.0 before 0.12.1 — fixed in 0.12.1

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Zeppelin 0.12.1. Check the vendor advisory for mitigations.

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

Get alerted when CVE-2026-44616 or the next vulnerability affects your stack