---
title: "CVE-2021-34427: Improper Input Validation | CubePath"
description: "In Eclipse BIRT versions 4.8.0 and earlier, an attacker can use query parameters to create a JSP file which is accessible from remote (current BIRT…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-34427
---

# CVE-2021-34427: Improper Input Validation | CubePath

## Description

In Eclipse BIRT versions 4.8.0 and earlier, an attacker can use query parameters to create a JSP file which is accessible from remote (current BIRT viewer dir) to inject JSP code into the running instance.

Official description from the CVE record, published by eclipse. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-34427)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.57982 (58.0% probability)

Percentile

99.1%

Scores of

Nov 10, 2026

Model

v2026.06.15

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-20](https://cwe.mitre.org/data/definitions/20.html) Improper Input Validation

## Affected products

Products listed in the CVE record, as the CNA published them.

- Eclipse BIRT

  - affected: unspecified up to 4.8.0

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [bugs.eclipse.org/bugs/show\_bug.cgi?id=538142](https://bugs.eclipse.org/bugs/show%5Fbug.cgi?id=538142)
- [20221220 SEC Consult SA-20221216-0 :: Remote code execution bypass in Eclipse Business Intelligence Reporting Tool (BiRT)](http://seclists.org/fulldisclosure/2022/Dec/30)  (seclists.org) mailing-list
- [packetstormsecurity.com/files/170326/Eclipse-Business-Intel…](http://packetstormsecurity.com/files/170326/Eclipse-Business-Intelligence-Reporting-Tool-4.11.0-Remote-Code-Execution.html)

## Timeline

1. ID reserved Jun 9, 2021
2. Record published Jun 25, 2021
3. Record last updated Aug 4, 2024

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:05 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)