CVE-2020-13388
An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.53% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- python/jw.util
- Source
- cve@mitre.org
EPSS 4.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://joel-malwarebenchmark.github.ioExploit, 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.ioExploit, 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.