What is CVE-2026-3219?

CVE-2026-3219 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. pip doesn't reject concatenated ZIP and tar archives

Which CVE IDs does CVE-2026-3219 cover?

CVE-2026-3219 covers the following CVE IDs: CVE-2026-3219. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-3219?

CVE-2026-3219 affects 9 products, including: azl3 python-pip 24.2-6 on Azure Linux 3.0; azl3 python-pip 24.2-8 on Azure Linux 3.0; azl3 python-virtualenv 20.36.1-2 on Azure Linux 3.0; azl3 python-virtualenv 20.36.1-4 on Azure Linux 3.0; cbl2 python-virtualenv 20.26.6-3; and others — see the full list on the advisory page.

CVE-2026-3219Medium

pip doesn't reject concatenated ZIP and tar archives

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-3219 →

🎯 Affected products9

azl3 python-pip 24.2-6 on Azure Linux 3.0
azl3 python-pip 24.2-8 on Azure Linux 3.0
azl3 python-virtualenv 20.36.1-2 on Azure Linux 3.0
azl3 python-virtualenv 20.36.1-4 on Azure Linux 3.0
cbl2 python-virtualenv 20.26.6-3
cbl2 python-virtualenv 20.26.6-3 on CBL Mariner 2.0
cbl2 python-virtualenv 20.26.6-3 on CBL-Mariner 2.0
cbl2 python3 3.9.19-19 on CBL Mariner 2.0
cbl2 python3 3.9.19-19 on CBL-Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 24.2-7 KBCBL-Mariner Releases (Security Update) — fixed build 20.36.1-3 KBCBL-Mariner Releases (Security Update) — fixed build 20.36.1-4 KBCBL-Mariner Releases (Security Update) — fixed build 24.2-8 KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-3219
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade