CVE-2026-44617 Apache Software Foundation CVE debrief

Who should care

Apache Zeppelin users and administrators should be aware of this vulnerability and take necessary actions to upgrade to a secure version. This includes reviewing the official advisory, assessing the impact on their environments, and applying patches or mitigations as needed. Security teams should prioritize vulnerability management and monitor for updates and advisories related to Apache Zeppelin. Operators and platform administrators should ensure that affected versions are identified and remediated promptly to prevent potential attacks. Vulnerability management processes should be updated to include checks for this vulnerability in the future. Security teams should also review compensating controls for exposed systems while remediation is scheduled and verified. Asset inventory and change management processes may need to be updated to address this vulnerability. Monitoring and detection capabilities should be reviewed to ensure they can detect potential attacks exploiting this vulnerability. Rollback and change window processes should be considered for remediation efforts. Source tracking and incident response plans should be updated to address potential exploitation of this vulnerability. The CVE record and official advisories should be reviewed for the latest information and guidance on addressing this vulnerability. Security teams should also consider the operational impact of this vulnerability on their environments and prioritize remediation efforts accordingly. The vulnerability management process should include tracking exceptions, retesting remediated assets, and closing the item only after evidence is documented. This vulnerability highlights the importance of keeping software up-to-date and having robust vulnerability management processes in place. By prioritizing remediation efforts and taking proactive steps, organizations can reduce the risk associated with this vulnerability and protect their environments from potential attacks. Security teams should also consider the source-confidence limits and review context when assessing the impact of this vulnerability on their environments. The CVE record and official advisories provide critical context,

Technical summary

The LDAP filter injection vulnerability in Apache Zeppelin occurs because LdapRealm uses RFC 4514 distinguished-name escaping when constructing LDAP search filters instead of RFC 4515 filter escaping. This leaves special filter characters insufficiently escaped, allowing for potential attacks. The 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 to address the vulnerability.

Defensive priority

Apache Zeppelin users should prioritize upgrading to version 0.12.1 to address the LDAP filter injection vulnerability.

Recommended defensive actions

• Upgrade Apache Zeppelin to version 0.12.1
• Review and apply patches for affected versions
• Monitor Apache Zeppelin for updates and advisories
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record indicates an LDAP filter injection vulnerability in Apache Zeppelin, which is an incomplete fix for CVE-2024-31867. Affected versions include 0.11.1, 0.11.2, and 0.12.0. Users are recommended to upgrade to version 0.12.1. The vulnerability allows for potential attacks due to insufficient escaping of special filter characters. Defenders should verify the presence of affected versions in their environments and review the official advisory for specific guidance.

Official resources