What is CVE-2026-59248?

CVE-2026-59248 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Unbounded HPACK/QPACK prefixed-integer decoding in Cowlib causes memory-exhaustion DoS

Which CVE IDs does CVE-2026-59248 cover?

CVE-2026-59248 covers the following CVE IDs: CVE-2026-59248. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-59248?

CVE-2026-59248 affects 2 products, including: azl3 rabbitmq-server 3.13.7-8 on Azure Linux 3.0; azl3 rabbitmq-server 3.13.7-9 on Azure Linux 3.0.

CVE-2026-59248Medium

Unbounded HPACK/QPACK prefixed-integer decoding in Cowlib causes memory-exhaustion DoS

Vendor

Microsoft Security Response Center (MSRC)

Published

August 7, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-59248 →

🎯 Affected products2

azl3 rabbitmq-server 3.13.7-8 on Azure Linux 3.0
azl3 rabbitmq-server 3.13.7-9 on Azure Linux 3.0

✅ Remediation

Security Update — fixed build 3.13.7-9

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-59248
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade