What’s Vulnerable › Vulnerabilities

CVE-2020-13388

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-05-22 · updated 2026-06-17
• Weakness: CWE-78

Description

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.

Affected products

• Python Jw.Util: before 2.3 — fixed in 2.3

How to fix

Upgrade to a fixed version: Python Jw.Util 2.3. Check the vendor advisory for mitigations.

References

• https://joel-malwarebenchmark.github.io
• https://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability/
• https://security.netapp.com/advisory/ntap-20200528-0002/
• https://joel-malwarebenchmark.github.io
• https://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability/
• https://security.netapp.com/advisory/ntap-20200528-0002/

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