Apache Kylin OS Command Injection Vulnerability

Apache Kylin contains an OS command injection vulnerability which could permit an attacker to perform remote code execution.

Published May 22, 2020 · Updated May 16, 2026

Why patchRisk explained in plain English

Worst-case scenarioIf unpatched

A remote attacker, with a low-privilege account, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. Federal agencies are required to remediate by 2022-04-15 under CISA BOD 22-01.

How the attack worksNo clicks needed

This is a OS Command Injection (CWE-78) vulnerability in Apache Kylin. Exploitation requires remote network access, low attack complexity, a low-privilege authenticated account, and no user interaction required.

Am I affected?Quick check

Probably yes if any of these apply:

●IT Security

●Running kylin: 2.3.0 ≤ v ≤ 2.3.2, 2.5.0 ≤ v ≤ 2.5.2, 2.6.0 ≤ v ≤ 2.6.5, 2.4.0, 2.4.1, 3.0.0, 3.0.1

Real-world incidentsWhat we've seen

Active exploitation documented in the wild. Threat-research write-up: https://community.sonarsource.com/t/apache-kylin-3-0-1-command-injection-vulnerability/25706

How to patch

Manual remediation steps

Apply the Vendor Patch

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog — apply the vendor's security update as soon as possible.

CISA required action: Apply updates per vendor instructions.

References

Vendor advisory: https://lists.apache.org/thread.html/r021baf9d8d4ae41e8c8332c167c4fa96c91b5086563d9be55d2d7acf%40%3Ccommits.kylin.apache.org%3E

NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2020-1956

CISA KEV: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1956

PowerShell automationComing soon

No tested PowerShell script for this entry yet. We’re prioritising automation based on user demand.

References

↗ CVE-2020-1956 ↗ NVD ↗ Vendor Advisory