What is CVE-2026-4224?

CVE-2026-4224 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Stack overflow parsing XML with deeply nested DTD content models

Which CVE IDs does CVE-2026-4224 cover?

CVE-2026-4224 covers the following CVE IDs: CVE-2026-4224. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-4224?

CVE-2026-4224 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-4224?

CVE-2026-4224 affects 8 products, including: azl3 python3 3.12.9-10 on Azure Linux 3.0; azl3 python3 3.12.9-11 on Azure Linux 3.0; azl3 python3 3.12.9-13 on Azure Linux 3.0; azl3 python3 3.12.9-14 on Azure Linux 3.0; azl3 python3 3.12.9-9 on Azure Linux 3.0; and others — see the full list on the advisory page.

CVE-2026-4224MediumCVSS 7.5

Stack overflow parsing XML with deeply nested DTD content models

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-4224 →

🎯 Affected products8

azl3 python3 3.12.9-10 on Azure Linux 3.0
azl3 python3 3.12.9-11 on Azure Linux 3.0
azl3 python3 3.12.9-13 on Azure Linux 3.0
azl3 python3 3.12.9-14 on Azure Linux 3.0
azl3 python3 3.12.9-9 on Azure Linux 3.0
cbl2 python3 3.9.19-19
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 3.9.19-21 KBCBL-Mariner Releases (Security Update) — fixed build 3.12.14-1 KBRelease Notes (Security Update) — fixed build 3.9.19-21

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4224
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade