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ZeppelinApplication · Apache

CVE-2026-44615

MEDIUM · 6.5 CVSS v3.1 Published 2026-07-31
Fix available
A fix is available. Upgrade to 0.12.1 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click 3 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-22

A file path is built from user input without being confined, so sequences like “../” let an attacker step outside the intended directory. That can expose configuration, credentials, or source code, and in the worst case lets an attacker write files where they shouldn't. A durable fix resolves and canonicalises the path, then rejects anything that escapes a known-safe base directory.

General guidance for the path traversal class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
ZeppelinApplication
Affected:>= 0.9.0, < 0.12.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 0.12.1 or later
Fixed in 0.12.1
Recommended fix High confidence

0.12.1

  1. 1. Backup your existing Zeppelin data, notebooks, and configuration files before upgrading.
  2. 2. Stop the Apache Zeppelin service if it is currently running.
  3. 3. Download Apache Zeppelin version 0.12.1 from the official Apache download page (downloads.apache.org/zeppelin/zeppelin-0.12.1/).
  4. 4. Install version 0.12.1 following the standard installation process for your deployment method (binary package or building from source).
  5. 5. Restore your configuration files from the backup, ensuring any custom settings are preserved.
  6. 6. Start the Apache Zeppelin service.
  7. 7. Verify that notebook operations work correctly and that path traversal is no longer possible by testing note rename and folder operations with traversal sequences (e.g., ../../../).
Caveat Review the 0.12.1 release notes for any breaking changes between your current version and the fixed release; minor version upgrades in Zeppelin typically preserve configuration compatibility.

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-44615 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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