CVE-2020-1956
KEVApache Kylin OS Command Injection Vulnerability
Description
Apache Kylin contains an OS command injection vulnerability which could permit an attacker to perform remote code execution.
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.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HPublishedMay 22, 2020
Last modifiedJun 17, 2026
Added to KEVMar 25, 2022
Remediation dueApr 15, 2022
References
- openwall.com/lists/oss-security/2020/07/14/1Mailing List
- community.sonarsource.com/t/apache-kylin-3-0-1-command-injection-vulnerability/25706ExploitThird Party Advisory
- lists.apache.org/thread.html/r021baf9d8d4ae41e8c8332c167c4fa96c91b5086563d9be55d2d7acf%40%3Ccommits.kylin.apache.org%3EMailing ListPatch
- lists.apache.org/thread.html/r1332ef34cf8e2c0589cf44ad269fb1fb4c06addec6297f0320f5111d%40%3Cuser.kylin.apache.org%3EMailing ListMitigation
- lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4bc45f3eb%40%3Cannounce.apache.org%3EMailing List
- lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4bc45f3eb%40%3Cdev.kylin.apache.org%3EMailing List
- lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4bc45f3eb%40%3Cuser.kylin.apache.org%3EMailing List
- lists.apache.org/thread.html/r61666760d8a4e8764b2d5fe158d8a48b569414480fbfadede574cdc0%40%3Ccommits.kylin.apache.org%3EMailing ListPatch
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1956Third Party AdvisoryUS Government Resource
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84
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1655 days
- CVSS
- 8.8 HIGH
- EPSS (30-day exploit probability)
- 97.4% · top 1% of all CVEs
- Weakness
- CWE-78
- Attack vector
- Network, remotely reachable
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.