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Vulnerability record · CVE-2021-34685 · published 8 November 2021

CVE-2021-34685: Hitachi vantara pentaho unrestricted file upload vulnerability

Hitachi · Vantara Pentaho

UploadService in Hitachi Vantara Pentaho Business Analytics through 9.1 does not properly verify uploaded user files, which allows an authenticated user to upload various files of different file types. Specifically, a .jsp file is not allowed, but a .jsp. file is allowed (and leads to remote code execution).

7.2 CVSS 3.1 High EPSS 2.3% · top 17.2% CWE-434 · Unrestricted file upload
7.2CVSS 3.1 base score, v2 6.5
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

UploadService in Hitachi Vantara Pentaho Business Analytics through 9.1 does not properly verify uploaded user files, which allows an authenticated user to upload various files of different file types. Specifically, a .jsp file is not allowed, but a .jsp. file is allowed (and leads to remote code execution).

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/164775/Pentaho-Business-Analytics-Pentaho-Business-Server-9.1-Filename-Bypass.html ExploitThird Party AdvisoryVDB Entry
https://www.hitachi.com/hirt/security/index.html Vendor Advisory
http://packetstormsecurity.com/files/164775/Pentaho-Business-Analytics-Pentaho-Business-Server-9.1-Filename-Bypass.html ExploitThird Party AdvisoryVDB Entry
https://www.hitachi.com/hirt/security/index.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-34685), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.