CVE-2021-45448: Pentaho Business Analytics Server - Pentaho Analyzer plugin exposes a service endpoint for templates which allows a user supplied path to access resources that are out of bounds.

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-02 · updated 2026-06-17
Weakness: CWE-22

Description

Pentaho Business Analytics Server versions before 9.2.0.2 and 8.3.0.25 using the Pentaho Analyzer plugin exposes a service endpoint for templates which allows a user-supplied path to access resources that are out of bounds. The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. By using special elements such as ".." and "/" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system.

Affected products

Hitachi Vantara Pentaho: from 8.3.0.0 before 8.3.0.25; from 9.2.0.0 before 9.2.0.2 — fixed in 8.3.0.25, 9.2.0.2

How to fix

Upgrade to a fixed version: Hitachi Vantara Pentaho 8.3.0.25, 9.2.0.2. Check the vendor advisory for mitigations.

References

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