What is CVE-2026-26081?

CVE-2026-26081 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format. HAProxy Enterprise and ALOHA are also affected.

Which CVE IDs does CVE-2026-26081 cover?

CVE-2026-26081 covers the following CVE IDs: CVE-2026-26081. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-26081?

CVE-2026-26081 has a CVSS v3 base score of 4.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-26081?

CVE-2026-26081 affects 2 products, including: azl3 haproxy 2.9.11-7 on Azure Linux 3.0; azl3 haproxy 2.9.11-8 on Azure Linux 3.0.

CVE-2026-26081MediumCVSS 4.8

HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format. HAProxy Enterprise and ALOHA are also affected.

Vendor

Microsoft Security Response Center (MSRC)

Published

July 23, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-26081 →

🎯 Affected products2

azl3 haproxy 2.9.11-7 on Azure Linux 3.0
azl3 haproxy 2.9.11-8 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 2.9.11-8

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26081
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade