CVE intelligence

CVE-2026-3219

Vulnerability intelligence

Published Apr 20, 2026Sources checked Nov 11, 2026

4.6MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-3219 and is rated Medium severity with a CVSS score of 4.6. 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: Sep 25, 2026

Vendor remediation details

CBL-Mariner Releases Release Notes

Vendor-listed releases

24.2-7
20.36.1-3
20.36.1-4
24.2-8

CISA KEVNot listedBased on the latest collected catalog

EPSS0.1%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-3219?

pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file. This behavior could result in confusing installation behavior, such as installing "incorrect" files according to the filename of the archive.

New behavior only proceeds with installation if the file identifies uniquely as a ZIP or tar archive, not as both.

Source: NVD