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netty

A vulnerability in Netty's HAProxy PROXY-v2 message decoder causes a reference-count leak when processing specially crafted PROXY-protocol v2 headers. This flaw allows a remote, unauthenticated attacker to exhaust memory resources, resulting in a denial of service (DoS) condition on the affected system.

CVE-2026-93564 describes a reference-count leak vulnerability in the HAProxy PROXY-v2 message decoder component of Netty. An attacker can send specially crafted PROXY-protocol v2 headers remotely without authentication, triggering the leak. This leads to memory exhaustion and causes a denial of service on the affected system. The vulnerability has a CVSS 3.1 base score of 7.5, indicating a medium severity level with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability.

Detailed information about A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker t

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send… (CVE-2026-93564) - Live Threat Intelligence - Threat Radar | OffSeq.com

A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send… (CVE-2026-93564)

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