How severe is CVE-2021-34685?

CVE-2021-34685 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-34685 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34685?

CVE-2021-34685 affects Hitachi Vantara Pentaho. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34685?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-34685 published?

CVE-2021-34685 was published on 2021-11-08 and last updated on 2026-06-17.

CVE-2021-34685

CVE-2021-34685 is a low-severity vulnerability in Hitachi Vantara Pentaho with a CVSS 3.x base score of 2.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Low (CVSS 3.x base score 2.7)
CVSS v2: 6.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Hitachi Vantara Pentaho
Published: 2021-11-08
Last modified: 2026-06-17

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).

Frequently asked questions

What is CVE-2021-34685?: 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).
How severe is CVE-2021-34685?: CVE-2021-34685 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-34685 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34685?: CVE-2021-34685 affects Hitachi Vantara Pentaho. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34685?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34685 published?: CVE-2021-34685 was published on 2021-11-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hitachi:vantara_pentaho:*:*:*:*:*:*:*:*

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