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CVE-2020-13388
CRITICAL
An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.
Published: May 22, 2020
Modified: Jun 17, 2026
CWE-78
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (1)
| Vendor | Product | Version |
|---|---|---|
| python | jw.util | * < 2.3 |
GitHub Security Advisory GHSA-h72c-w3q3-55qq
OS Command Injection in jw.util
pip
jw.util
< 2.3
Fixed: 2.3
References (6)
- https://joel-malwarebenchmark.github.io Exploit, Third Party Advisory
- https://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability/ Exploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200528-0002/ Third Party Advisory
- https://joel-malwarebenchmark.github.io Exploit, Third Party Advisory
- https://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability/ Exploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200528-0002/ Third Party Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
4.42%
Top 9% most likely to be exploited
Threat Score
40.5 / 100
Data Sources
NVD
EPSS
GitHub