CVE-2026-93564High· 7.5▾ TwilightA 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 D…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Last analysed / modified upstream
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-93562Medium· 6.5A flaw was found in Netty's HTTP/1 decoder
CVE-2026-93579Medium· 6.5A flaw was found in Netty's HTTP/2 stack
CVE-2026-93558High· 7.5A flaw was found in Netty's WebSocketServerExtensionHandler
CVE-2026-93565High· 7.5A flaw was found in Netty RtspDecoder
CVE-2026-93566Medium· 6.5A flaw was found in Netty
CVE-2026-93492Medium· 5.3A flaw was found in Netty's HTTP/2 HpackEncoder