Published Nov 10, 2021Sources checked Nov 11, 2026
5.7MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2021-3572 and is rated Medium severity with a CVSS score of 5.7. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Aug 12, 2026
CBL-Mariner Releases
Vendor-listed releases
19.2-2
CISA KEVNot listedBased on the latest collected catalog
EPSS1.8%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2021-3572?
A flaw was found in python-pip in the way it handled Unicode separators in git references. A remote attacker could possibly use this issue to install a different revision on a repository.
The highest threat from this vulnerability is to data integrity. This is fixed in python-pip version 21.1.