MinorCritical vulnerability

CVE-2026-93564 (CVSS 7.5)

NVD · officialPublished Sep 18, 2026Risk 23/100EPSS 0.4%

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service (DoS) for the affected system.

Technical details

CVSS

7.5

AV:NetworkAC:LowPR:NoneUI:NoneC:NoneI:NoneA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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