What is CVE-2026-66337?

CVE-2026-66337 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Libsoup: libsoup: heap buffer over-read via integer underflow in soup_filter_input_stream_read_until()

Which CVE IDs does CVE-2026-66337 cover?

CVE-2026-66337 covers the following CVE IDs: CVE-2026-66337. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-66337?

CVE-2026-66337 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-66337?

CVE-2026-66337 affects 2 products, including: azl3 libsoup 3.4.4-16 on Azure Linux 3.0; azl3 libsoup 3.4.4-17 on Azure Linux 3.0.

CVE-2026-66337MediumCVSS 6.5

Libsoup: libsoup: heap buffer over-read via integer underflow in soup_filter_input_stream_read_until()

Vendor

Microsoft Security Response Center (MSRC)

Published

August 7, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-66337 →

🎯 Affected products2

azl3 libsoup 3.4.4-16 on Azure Linux 3.0
azl3 libsoup 3.4.4-17 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66337
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade