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Vulnerability record · CVE-2021-3572 · published 10 November 2021

CVE-2021-3572: Pypa pip improper input validation vulnerability

Pypa · Pip

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.

5.7 CVSS 3.1 Medium EPSS 1.8% · top 22.0% CWE-20 · Improper input validation
5.7CVSS 3.1 base score, v2 3.5
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
8References
25 Aug 2026Last modified by NVD

Description

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.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=1962856 Issue TrackingPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1962856 Issue TrackingPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-3572), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.