Medium severity · published Jul 30, 2026
CVE-2026-44617
Apache Zeppelin: LDAP filter injection in LdapRealm — incomplete fix of CVE-2024-31867
6.5
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 58% 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
0.11.1 before 0.12.1 · source: vendor
ZE
Zeppelin · Apache
0.11.1 before 0.12.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44617
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44617
Issue Tracking
https://github.com/apache/zeppelin/pull/5226
Mailing List
https://lists.apache.org/thread/s65t6n3s1v4j5b1w7zvv5w73ko69m1zv
Mailing List
https://www.cve.org/CVERecord?id=CVE-2024-31867
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