CVE-2020-1956

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Exploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 97%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

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 v3
8.8
EG Score
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
97%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

May 22, 2020

Last Modified

October 23, 2025

Advisory Details (8)

Auto-updated Jun 2, 2026
Patch available.
generic

[Tech Story] Apache Kylin 3.0.1 Command Injection Vulnerability - Sonar Updates - Sonar Community

https://community.sonarsource.com/t/apache-kylin-3-0-1-command-injection-vulnerability/25706
generic

oss-security - [SECURITY][CVE-2020-13925] Apache Kylin command injection vulnerability

http://www.openwall.com/lists/oss-security/2020/07/14/1
generic
https://lists.apache.org/thread.html/r61666760d8a4e8764b2d5fe158d8a48b569414480fbfadede574cdc0%40%3Ccommits.kylin.apache.org%3E
generic
https://lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4bc45f3eb%40%3Cuser.kylin.apache.org%3E
generic
https://lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4bc45f3eb%40%3Cdev.kylin.apache.org%3E
generic
https://lists.apache.org/thread.html/r250a867961cfd6e0506240a9c7eaee782d84c6ab0091c7c4bc45f3eb%40%3Cannounce.apache.org%3E
generic
https://lists.apache.org/thread.html/r1332ef34cf8e2c0589cf44ad269fb1fb4c06addec6297f0320f5111d%40%3Cuser.kylin.apache.org%3E
generic
https://lists.apache.org/thread.html/r021baf9d8d4ae41e8c8332c167c4fa96c91b5086563d9be55d2d7acf%40%3Ccommits.kylin.apache.org%3E

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.apache.kylin:kylin-core-common3.0.0, 3.0.1
  • every version up to 2.6.6: fixed in 2.6.6
  • 3.0.0 up to 3.0.2: fixed in 3.0.2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 135 total refreshes for this CVE.

  1. 2026-10-09 22:39 UTCEG score recompute
  2. 2026-10-09 20:04 UTCEPSS rescore
  3. 2026-10-08 18:58 UTCEG score recompute
  4. 2026-10-08 16:38 UTCEPSS rescore
  5. 2026-10-02 16:55 UTCEG score recompute
  6. 2026-10-02 16:22 UTCEPSS rescore
  7. 2026-09-28 22:00 UTCEG score recompute
  8. 2026-09-27 21:51 UTCCISA KEV update
  9. 2026-09-25 19:35 UTCCISA KEV update
  10. 2026-09-25 14:55 UTCCISA KEV update
  11. 2026-09-24 19:31 UTCCISA KEV update
  12. 2026-09-24 15:07 UTCEG score recompute
  13. 2026-09-24 14:00 UTCEPSS rescore
  14. 2026-09-24 14:00 UTCEPSS rescore
  15. 2026-09-22 19:36 UTCCISA KEV update
  16. 2026-09-22 15:44 UTCEG score recompute
  17. 2026-09-22 14:43 UTCEPSS rescore
  18. 2026-09-21 23:56 UTCEG score recompute
  19. 2026-09-21 20:28 UTCEPSS rescore
  20. 2026-09-21 19:09 UTCCISA KEV update
  21. 2026-09-18 19:20 UTCCISA KEV update
  22. 2026-09-18 14:15 UTCCISA KEV update
  23. 2026-09-16 16:33 UTCEG score recompute
  24. 2026-09-16 14:10 UTCCISA KEV update
  25. 2026-09-16 14:04 UTCEPSS rescore
Show 75 more
  1. 2026-09-14 19:24 UTCCISA KEV update
  2. 2026-09-11 18:49 UTCCISA KEV update
  3. 2026-09-11 18:03 UTCEG score recompute
  4. 2026-09-11 14:48 UTCEPSS rescore
  5. 2026-09-10 19:28 UTCCISA KEV update
  6. 2026-09-09 19:08 UTCCISA KEV update
  7. 2026-09-08 22:57 UTCEG score recompute
  8. 2026-09-08 21:56 UTCEPSS rescore
  9. 2026-09-08 18:54 UTCCISA KEV update
  10. 2026-09-07 19:13 UTCEG score recompute
  11. 2026-09-07 15:57 UTCEPSS rescore
  12. 2026-09-06 15:31 UTCEG score recompute
  13. 2026-09-06 13:44 UTCEPSS rescore
  14. 2026-09-05 15:51 UTCEG score recompute
  15. 2026-09-05 15:24 UTCEPSS rescore
  16. 2026-09-04 17:38 UTCCISA KEV update
  17. 2026-09-02 17:33 UTCCISA KEV update
  18. 2026-08-31 14:19 UTCCISA KEV update
  19. 2026-08-30 21:03 UTCEG score recompute
  20. 2026-08-30 19:14 UTCEPSS rescore
  21. 2026-08-28 21:40 UTCEG score recompute
  22. 2026-08-27 17:22 UTCCISA KEV update
  23. 2026-08-26 17:41 UTCCISA KEV update
  24. 2026-08-25 14:21 UTCEG score recompute
  25. 2026-08-25 13:45 UTCEPSS rescore
  26. 2026-08-24 18:52 UTCCISA KEV update
  27. 2026-08-24 14:41 UTCEG score recompute
  28. 2026-08-24 10:45 UTCEG score recompute
  29. 2026-08-21 16:49 UTCCISA KEV update
  30. 2026-08-20 17:06 UTCCISA KEV update
  31. 2026-08-19 17:33 UTCCISA KEV update
  32. 2026-08-18 16:58 UTCCISA KEV update
  33. 2026-08-18 16:32 UTCEG score recompute
  34. 2026-08-18 13:44 UTCEPSS rescore
  35. 2026-08-17 13:56 UTCCISA KEV update
  36. 2026-08-12 14:29 UTCEG score recompute
  37. 2026-08-12 13:47 UTCEPSS rescore
  38. 2026-08-11 19:32 UTCCISA KEV update
  39. 2026-08-07 17:09 UTCCISA KEV update
  40. 2026-08-05 17:25 UTCCISA KEV update
  41. 2026-08-04 17:02 UTCCISA KEV update
  42. 2026-08-03 19:22 UTCCISA KEV update
  43. 2026-07-30 10:36 UTCEG score recompute
  44. 2026-07-29 19:27 UTCCISA KEV update
  45. 2026-07-27 19:24 UTCCISA KEV update
  46. 2026-07-27 17:17 UTCCISA KEV update
  47. 2026-07-26 14:12 UTCEG score recompute
  48. 2026-07-23 01:50 UTCEG score recompute
  49. 2026-07-23 00:07 UTCEG score recompute
  50. 2026-07-22 22:36 UTCEG score recompute
  51. 2026-07-22 19:40 UTCCISA KEV update
  52. 2026-07-22 16:10 UTCEG score recompute
  53. 2026-07-22 14:05 UTCEPSS rescore
  54. 2026-07-21 14:37 UTCCISA KEV update
  55. 2026-07-17 08:39 UTCEG score recompute
  56. 2026-07-16 17:04 UTCCISA KEV update
  57. 2026-07-15 16:49 UTCCISA KEV update
  58. 2026-07-15 15:04 UTCCISA KEV update
  59. 2026-07-14 18:05 UTCCISA KEV update
  60. 2026-07-13 22:27 UTCEPSS rescore
  61. 2026-07-13 22:27 UTCEPSS rescore
  62. 2026-07-13 17:07 UTCCISA KEV update
  63. 2026-07-10 17:52 UTCCISA KEV update
  64. 2026-07-08 15:12 UTCEPSS rescore
  65. 2026-07-07 19:01 UTCCISA KEV update
  66. 2026-07-07 17:16 UTCCISA KEV update
  67. 2026-07-01 19:16 UTCCISA KEV update
  68. 2026-06-29 19:12 UTCCISA KEV update
  69. 2026-06-25 19:15 UTCCISA KEV update
  70. 2026-06-24 14:03 UTCEPSS rescore
  71. 2026-06-24 14:03 UTCEPSS rescore
  72. 2026-06-23 21:31 UTCEPSS rescore
  73. 2026-06-23 21:31 UTCEPSS rescore
  74. 2026-06-23 17:44 UTCCISA KEV update
  75. 2026-06-18 17:50 UTCEPSS rescore

Public detection templates

(1 reference)

A public Nuclei detection template is referenced for this CVE. A detection template checks whether a system is affected; it is not necessarily exploit code.

  • Nucleihttp/cves/2020/CVE-2020-1956.yaml
    Published May 31, 2023

    Apache Kylin 3.0.1 - Command Injection Vulnerability

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(6)

What is CVE-2020-1956?
CVE-2020-1956 is a critical vulnerability published on May 22, 2020. 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.
When was CVE-2020-1956 disclosed?
CVE-2020-1956 was first published on May 22, 2020, with the most recent update on October 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-1956 actively exploited?
Yes. CISA added CVE-2020-1956 to the Known Exploited Vulnerabilities catalog on March 25, 2022, affecting Apache Kylin. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2020-1956?
CVE-2020-1956 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2020-1956?
CVE-2020-1956 affects Apache Kylin. The affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2020-1956?
A fix for CVE-2020-1956 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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