CVE-2020-1956 (GCVE-0-2020-1956)
Vulnerability from cvelistv5 – Published: 2020-05-22 13:27 – Updated: 2025-10-21 23:35Summary
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.
Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-06 20:55 UTC
CWE
- Command Injection
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/r1332ef34cf8… | x_refsource_MISC |
| https://community.sonarsource.com/t/apache-kylin-… | x_refsource_MISC |
| https://lists.apache.org/thread.html/r250a867961c… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r250a867961c… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r61666760d8a… | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r250a867961c… | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2020/07/14/1 | mailing-listx_refsource_MLIST |
| https://lists.apache.org/thread.html/r021baf9d8d4… | mailing-listx_refsource_MLIST |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1ea368f5-d76e-4593-9d0b-f723a24d7d96
Exploited: Yes
Timestamps
First Seen: 2022-03-25
Asserted: 2022-03-25
Scope
Notes: Apache Kylin OS Command Injection Vulnerability | Affected: Apache / Kylin | Description: Apache Kylin contains an OS command injection vulnerability which could permit an attacker to perform remote code execution. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-15 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2020-1956
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-78 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Kylin |
| Due Date | 2022-04-15 |
| Date Added | 2022-03-25 |
| Vendorproject | Apache |
| Vulnerabilityname | Apache Kylin OS Command Injection Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:10 CEST
| Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 06faa8fc-2d5c-4cd9-9b89-5af95f70cc20
Exploited: Yes
Timestamps
First Seen: 2022-03-25
Asserted: 2022-03-25
Scope
Notes: 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... | Affected: Apache / Kylin | CVSS: 8.8 (HIGH) | EPSS: 0.97337 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | 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... |
| Cve Id | CVE-2020-1956 |
| Vendor | Apache |
| Ghsa Id | GHSA-GPRM-XQRC-C2J3 |
| Product | Kylin |
| Added Date | 2022-03-25T00:00:00.000Z |
| Cvss Score | 8.8 |
| Epss Score | 0.97337 |
| Previous Ids | |
| Cvss Severity | HIGH |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99896 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2020-1956 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:10 CEST
| Updated: 2026-10-02 09:10 CEST
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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