Apache Zeppelin LDAP filter injection v0.12.0 RFC4514 escape fail
CVE-2026-44617 Published on July 30, 2026
Apache Zeppelin: LDAP filter injection in LdapRealm — incomplete fix of CVE-2024-31867
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.
Vulnerability Analysis
CVE-2026-44617 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a LDAP Injection Vulnerability?
The software constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component.
CVE-2026-44617 has been classified to as a LDAP Injection vulnerability or weakness.
Products Associated with CVE-2026-44617
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Affected Versions
Apache Software Foundation Apache Zeppelin:- Version 0.11.1 and below 0.12.1 is affected.