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Vulnerabilities

Vulnerability · CVE-2020-1956

Apache Kylin OS Command Injection Vulnerability

Published May 22, 2020 · catalog updated Jun 16, 2026 · Apache Kylin

Patch now

CVE-2020-1956 is in the CISA known-exploited catalog, due Apr 15, 2022. Confirm Apache Kylin against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
97.34%
Remediation
Remediation guidance
Affected products
cpe apache/kylin · vendor Apache Kylin

Apache Kylin 2.3.0, and releases up to 2.6.5 and 3.0.1 has some restful apis which will concatenate os command with the user input string, a user is likely to be able to execute any os command without any protection or validation.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/kylin2.4.0
  • cpe apache/kylin2.4.1
  • cpe apache/kylin3.0.0
  • vendor Apache Kylinversion unspecified

How to fix CVE-2020-1956

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-1956 is in the CISA known-exploited catalog, due Apr 15, 2022. Confirm Apache Kylin against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 2.4.0, 2.4.1, 3.0.0. Apply updates per vendor instructions.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 97.34%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 22, 2020 · Catalog

    Detected

    Apache Kylin 2.3.0, and releases up to 2.6.5 and 3.0.1 has some restful apis which will concatenate os command with the user input string, a user is likely to be able to execute any os command without any protection or validation.

  2. Mar 25, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 15, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Apache Kylin 2.3.0, and releases up to 2.6.5 and 3.0.1 has some restful apis which will concatenate os command with the user input string, a user is likely to be able to execute any os command without any protection or validation.

Sources

  • CISA KEVConfirmed exploitationCVE-2020-1956

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-1956

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-1956

    30-day exploitation probability 97.3%

    first.org
  • NIST NVDVulnerability recordCVE-2020-1956

    Apache Kylin 2.3.0, and releases up to 2.6.5 and 3.0.1 has some restful apis which will concatenate os command with the user input string, a user is likely to be able to execute any os command without any protection or validation.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2020-1956

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.