What is CVE-2026-44616?

CVE-2026-44616 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-2026-44616?

Medium severity. CVSS v3 base score is 6.5 out of 10.

LDAP Injection in Apache Zeppelin

CVE-2026-44616

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.

Published 2026-07-30 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.1th percentile), scored 2026-10-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Apache Zeppelin
Apache Software Foundation Zeppelin — versions 0.6.0

Weakness classification (CWE)

CWE-90 — LDAP Injection

References

github.com/apache/zeppelin/pull/5226 (Patch, patch, Issue Tracking)
lists.apache.org/thread/p6llqpvcszpg1wc8kx5ncfkdbms3g0rn (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-44616?: CVE-2026-44616 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-2026-44616?: Medium severity. CVSS v3 base score is 6.5 out of 10.