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CVE-2021-34427

CriticalPublished

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...

Published: Jun 25, 2021
Updated: Aug 4, 2024
Assigning CNA: eclipse
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

58.0%

High · next 30 days

Percentile: 99.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2021-34427PoC
Windows POC for CVE-2021-34427 affecting Birt Viewer

Responsible use

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