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CVE-2020-13388

25
FAUCET Score

CVE-2020-13388 is a critical vulnerability affecting the jw.util Python package before version 2.3, specifically within its configuration-loading functionality. An attacker can achieve arbitrary Python code execution, leading to OS command execution, by exploiting the unsafe loading of YAML configurations via FromString or FromStream. This vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation, Metasploit modules, or ExploitDB entries are currently reported, and community discussion is minimal, the potential impact remains severe.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3CPE matchmatch criteria
cpe:2.3:a:python:jw.util:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.42%
Probability of exploitation in next 30 days
EPSS Percentile
90.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0442 is in the 84th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: jw.utilFixed in: 2.3

Vendor Advisories (1)

pipGHSA-h72c-w3q3-55qqcritical

OS Command Injection in jw.util

Jun 2, 2021

References

joel-malwarebenchmark.github.io
ExploitThird Party Advisory
joel-malwarebenchmark.github.io / blog/2020/04/27/cve-2020-13388-jw-util-vulnerability
ExploitThird Party Advisory
security.netapp.com / advisory/ntap-20200528-0002
Third Party Advisory