What is CVE-2026-26080?

CVE-2026-26080 is a security advisory published by Microsoft Security Response Center (MSRC) with Low severity. HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. HAProxy Enterprise and ALOHA are also affected.

Which CVE IDs does CVE-2026-26080 cover?

CVE-2026-26080 covers the following CVE IDs: CVE-2026-26080. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-26080?

CVE-2026-26080 has a CVSS v3 base score of 3.7, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-26080?

CVE-2026-26080 affects 1 product, including: azl3 haproxy 2.9.11-7 on Azure Linux 3.0.

CVE-2026-26080LowCVSS 3.7

HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. 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-2026-26080 →

🎯 Affected products1

azl3 haproxy 2.9.11-7 on Azure Linux 3.0

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26080