What is CVE-2026-18149?

CVE-2026-18149 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. undici vulnerable to Denial of Service via orphaned RetryHandler response body

Which CVE IDs does CVE-2026-18149 cover?

CVE-2026-18149 covers the following CVE IDs: CVE-2026-18149. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-18149?

CVE-2026-18149 has a CVSS v3 base score of 5.9, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-18149?

CVE-2026-18149 affects 2 products, including: azl3 nodejs 24.18.1-1 on Azure Linux 3.0; azl3 nodejs 24.20.0-1 on Azure Linux 3.0.

CVE-2026-18149MediumCVSS 5.9

undici vulnerable to Denial of Service via orphaned RetryHandler response body

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-18149 →

🎯 Affected products2

azl3 nodejs 24.18.1-1 on Azure Linux 3.0
azl3 nodejs 24.20.0-1 on Azure Linux 3.0

✅ Remediation

Security Update

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-18149
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade