CVE-2021-23338

Name: CVE-2021-23338
Creator: NVD / NIST
Published: 2021-02-15T16:15:15.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 3.55%

Last modified Jun 17, 2026

CVE-2021-23338 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. This affects all versions of package qlib. The workflow function in cli part of qlib was using an unsafe YAML load function.. EPSS estimates a 3.55% chance of exploitation in the next 30 days.

Description

This affects all versions of package qlib. The workflow function in cli part of qlib was using an unsafe YAML load function.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

3.55%

87.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Microsoft	Qlib	All versions

References

https://github.com/418sec/huntr/pull/1329Exploit, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-PYTHON-QLIB-1054635Third Party Advisory
https://github.com/418sec/huntr/pull/1329Exploit, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-PYTHON-QLIB-1054635Third Party Advisory

Timeline

Published: Feb 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23338?

This affects all versions of package qlib. The workflow function in cli part of qlib was using an unsafe YAML load function.

How severe is CVE-2021-23338?

CVE-2021-23338 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 3.55% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23338?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23338?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST