What’s Vulnerable › Vulnerabilities

CVE-2026-44617: Apache Zeppelin: LDAP filter injection in LdapRealm — incomplete fix of CVE-2024-31867

• 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 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.

Affected products

• Apache Software Foundation Apache Zeppelin: from 0.11.1 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/s65t6n3s1v4j5b1w7zvv5w73ko69m1zv
• https://www.cve.org/CVERecord?id=CVE-2024-31867

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