CVE-2026-44615
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk40th percentile - higher than 40% of all known CVEs
Summary
In Apache Zeppelin versions 0.9.0 through 0.12.0, when FileSystemNotebookRepo is configured, an authenticated attacker with rename or folder operation permissions can use traversal segments in note or folder paths. Zeppelin composes these into filesystem paths without ensuring they remain under the configured notebook directory, potentially allowing file move, write, or delete outside the notebook root.
Risk Assessment
The risk is moving, writing, or deleting notebook files outside the allowed directory, potentially leading to data loss or unauthorized access to system files.
Recommendation
Upgrade Apache Zeppelin to version 0.12.1, which includes the fix.
Other vulnerabilities in Apache Zeppelin
See all- CVE-2026-44617Medium
Apache Zeppelin versions 0.11.1, 0.11.2, and 0.12.0 are vulnerable to LDAP filter injection. LdapRealm uses incorrect escaping (RFC 4514 instead of RFC 4515), leaving filter characters insufficiently escaped. This is an incomplete fix of CVE-2024-31867.
- CVE-2026-44616Medium
Apache Zeppelin versions 0.6.0 through 0.12.0 are vulnerable to LDAP injection. ActiveDirectoryGroupRealm constructs LDAP filters without escaping user input, allowing an authenticated attacker to inject filter syntax via the user-search endpoint.
- CVE-2026-44613Medium
Apache Zeppelin versions 0.6.0 through 0.12.0 are vulnerable to Cross-Site Request Forgery (CSRF). The default CORS configuration allows cross-origin state-changing requests and accepts text/plain bodies, enabling an attacker to perform actions on behalf of an authenticated user.
Original NVD description (English source)
Path traversal vulnerability in Apache Zeppelin. When FileSystemNotebookRepo is configured, an authenticated attacker with permission to rename a note, or access to folder operations, could supply traversal segments in note or folder paths. Zeppelin composed these values into filesystem paths using the server's filesystem or Hadoop identity without ensuring that the result remained under the configured notebook directory. This could allow 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. Users are recommended to upgrade to version 0.12.1, which fixes this issue.