CVE-2026-44615 Apache Software Foundation CVE debrief

Who should care

Apache Zeppelin administrators and users with permissions to rename notes or access folder operations should be aware of this vulnerability and take steps to mitigate it. They should review official advisories, verify affected deployments, and implement compensating controls as needed. Security teams and vulnerability management teams should also be aware of this issue and track exceptions and remediation efforts.

Technical summary

CVE-2026-44615 is a path traversal vulnerability in Apache Zeppelin's FileSystemNotebookRepo configuration. An authenticated attacker with permission to rename notes or access folder operations could supply traversal segments in note or folder paths, allowing notebook files or directories to be moved, written, or deleted outside the notebook root. This issue affects Apache Zeppelin versions 0.9.0 through 0.12.0. The vulnerability can be mitigated by upgrading to version 0.12.1, restricting permissions, and monitoring for suspicious activity.

Defensive priority

Authenticated attackers with permission to rename notes or access folder operations could exploit this path traversal vulnerability in Apache Zeppelin to move, write, or delete notebook files or directories outside the notebook root.

Recommended defensive actions

• Upgrade Apache Zeppelin to version 0.12.1 or later
• Restrict permissions for renaming notes and folder operations to trusted users
• Monitor Apache Zeppelin instances for suspicious activity
• 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-2026-44615 record indicates a path traversal vulnerability in Apache Zeppelin affecting versions 0.9.0 through 0.12.0. Users are recommended to upgrade to version 0.12.1. Official references include GitHub pull requests 5227 and 5248, and Apache security mailing list discussions. The vulnerability allows an authenticated attacker with permission to rename notes or access folder operations to supply traversal segments in note or folder paths, potentially moving, writing, or deleting notebook files or directories outside the notebook root. Defenders should verify affected Zeppelin deployments, review official advisories, and monitor for suspicious activity.

Official resources