LDAP Injection in Apache Zeppelin
CVE-2026-44617
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.
EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Apache Zeppelin
- Apache Software Foundation Zeppelin — versions 0.11.1
Weakness classification (CWE)
References
- security@apache.org (Patch, patch, Issue Tracking)
- security@apache.org (Mailing List, Third Party Advisory)
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-44617?
- CVE-2026-44617 is a medium-severity vulnerability in Apache Zeppelin, classified under LDAP Injection. CVSS score: 6.5/10. Published 2026-07-30.
- How severe is CVE-2026-44617?
- Medium severity. CVSS v3 base score is 6.5 out of 10.