CVE-2021-34685

Name: CVE-2021-34685
Creator: NVD / NIST
Published: 2021-11-08T04:15:08.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 2.25%

Last modified Jun 17, 2026

CVE-2021-34685 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 2.25% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

2.25%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Hitachi	Vantara Pentaho	<= 9.1.0.0

References

http://packetstormsecurity.com/files/164775/Pentaho-Business-Analytics-Pentaho-Business-Server-9.1-Filename-Bypass.htmlExploit, Third Party Advisory, VDB Entry
https://www.hitachi.com/hirt/security/index.htmlVendor Advisory
http://packetstormsecurity.com/files/164775/Pentaho-Business-Analytics-Pentaho-Business-Server-9.1-Filename-Bypass.htmlExploit, Third Party Advisory, VDB Entry
https://www.hitachi.com/hirt/security/index.htmlVendor Advisory

Timeline

Published: Nov 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34685?

How severe is CVE-2021-34685?

CVE-2021-34685 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34685?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34685?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST