What is CVE-2026-56154?

CVE-2026-56154 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}

Which CVE IDs does CVE-2026-56154 cover?

CVE-2026-56154 covers the following CVE IDs: CVE-2026-56154. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-56154?

CVE-2026-56154 has a CVSS v3 base score of 9.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-56154?

CVE-2026-56154 affects 1 product, including: azl3 httpd 2.4.68-1 on Azure Linux 3.0.

CVE-2026-56154CriticalCVSS 9.8

Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}

Vendor

Microsoft Security Response Center (MSRC)

Published

October 9, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-56154 →

🎯 Affected products1

azl3 httpd 2.4.68-1 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update) — fixed build 2.4.69-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56154
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade