Medium severity · published Jul 30, 2026
CVE-2026-44616
Apache Zeppelin: LDAP injection in ActiveDirectoryGroupRealm filter construction
6.5
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AZ
Apache Zeppelin · Apache Software Foundation
0.6.0 before 0.12.1 · source: vendor
ZE
Zeppelin · Apache
0.6.0 before 0.12.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44616
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44616
Issue Tracking
https://github.com/apache/zeppelin/pull/5226
Mailing List
https://lists.apache.org/thread/p6llqpvcszpg1wc8kx5ncfkdbms3g0rn
Mailing List
http://www.openwall.com/lists/oss-security/2026/07/30/3
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