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RedHat Linux
RedHat Linux
•added 2026/10/06 11:45 a.m.•14 views

netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers

A flaw was found in the Netty HAProxy PROXY protocol v2 codec. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy PROXY protocol v2 header with nested PP2TYPESSL type-length-value TLV records. This can lead to a memory leak, causing the underlying cumulation...

8.7CVSS7.3AI score0.00882EPSS
SaveExploits0References7
BDU FSTEC
BDU FSTEC
•added 2026/09/28 12:00 a.m.•22 views

HAProxy PROXY v2 Netty DoS

The vulnerability of the HAProxy PROXY v2 framework for developing network applications, servers, and Netty-based clients relates to improper syntax validation during input processing. Exploiting this vulnerability allows an attacker to cause service interruptions remotely...

7.8CVSS7.6AI score0.00882EPSS
SaveExploits0References24Affected Software12
RedHat Linux
RedHat Linux
•added 2026/09/22 2:01 p.m.•15 views

io.netty/netty-codec-haproxy: Netty: HAProxy PROXY-v2 nested-TLV grandchild ByteBuf reference-count leak (incomplete fix of PR #16881)

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...

7.5CVSS6.8AI score0.00939EPSS
SaveExploits0References4
RedHat Linux
RedHat Linux
•added 2026/09/21 4:19 p.m.•12 views

io.netty/netty-codec-haproxy: Netty: HAProxy PROXY-v2 nested-TLV grandchild ByteBuf reference-count leak (incomplete fix of PR #16881)

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...

7.5CVSS6.8AI score0.00939EPSS
SaveExploits0References4
RedHat Linux
RedHat Linux
•added 2026/09/21 4:19 p.m.•12 views

io.netty/netty-codec-haproxy: Netty: HAProxy PROXY-v2 nested-TLV grandchild ByteBuf reference-count leak (incomplete fix of PR #16881)

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...

7.5CVSS6.8AI score0.00939EPSS
SaveExploits0References4
osv_ubuntu
osv_ubuntu
•added 2026/09/18 3:17 p.m.•18 views

UBUNTU-CVE-2026-93564

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...

7.5CVSS6.8AI score0.00939EPSS
SaveExploits0References5
Mend
Mend
•added 2026/09/18 2:13 p.m.•10 views

CVE-2026-93564

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...

8.7CVSS6.8AI score0.00939EPSS
SaveExploits0References6
RedhatCVE
RedhatCVE
•added 2026/06/13 2:34 a.m.•25 views

CVE-2026-48059

A flaw was found in the Netty HAProxy PROXY protocol v2 codec. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy PROXY protocol v2 header with nested PP2TYPESSL type-length-value TLV records. This can lead to a memory leak, causing the underlying cumulation...

8.7CVSS7.4AI score0.00882EPSS
SaveExploits0References6
Mend
Mend
•added 2026/06/12 2:42 p.m.•6 views

CVE-2026-48059

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, the HAProxy PROXY protocol v2 codec in netty leaks native or heap memory on every connection when a client sends a syntactically valid header containing nest...

8.7CVSS7.2AI score0.00882EPSS
SaveExploits0References25
Rapid7 Vulnerability Database (full)
Rapid7 Vulnerability Database (full)
•added 2026/06/12 12:00 a.m.•6 views

CVE-2026-48059: Missing Release of Memory after Effective Lifetime

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, the HAProxy PROXY protocol v2 codec in netty leaks native or heap memory on every connection when a client sends a syntactically valid header containing nest...

8.7CVSS7.2AI score0.00882EPSS
SaveExploits0References4
EUVD
EUVD
•added 2025/10/03 8:07 p.m.•22 views

EUVD-2022-3110

Malicious code in bioql PyPI...

7.5CVSS7.4AI score0.04295EPSS
SaveExploits1References8
Github Security Blog
Github Security Blog
•added 2022/05/24 4:51 p.m.•34 views

mastercactapus proxyprotocol vulnerable to denial of service

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

7.5CVSS6.6AI score0.04295EPSS
SaveExploits1References8Affected Software1
Veracode
Veracode
•added 2019/07/24 2:40 p.m.•25 views

Denial Of Service (DoS)

mastercactapus proxyprotocol is vulnerable to denial of service attacks. Remote attackers are able to send a specifically crafted HAProxy PROXY v2 request with truncated source/destination address data to the server causing a system crash...

7.5CVSS7.3AI score0.04295EPSS
SaveExploits1References6Affected Software1
osv_cve
osv_cve
•added 2019/07/23 10:15 p.m.•35 views

CVE-2019-14243

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

7.5CVSS6.8AI score
SaveExploits0References6
NVD
NVD
•added 2019/07/23 10:15 p.m.•40 views

CVE-2019-14243

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

7.5CVSS7.3AI score0.04295EPSS
SaveExploits1References6
Prion
Prion
•added 2019/07/23 10:15 p.m.•30 views

Design/Logic Flaw

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

5CVSS7.3AI score0.04295EPSS
SaveExploits1References6Affected Software1
Cvelist
Cvelist
•added 2019/07/23 9:38 p.m.•57 views

CVE-2019-14243

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

7.3AI score0.04295EPSS
SaveExploits1References6
Mend
Mend
•added 2019/07/23 9:38 p.m.•10 views

CVE-2019-14243

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

8.7CVSS0.04295EPSS
SaveExploits1References9
Rapid7 Vulnerability Database (full)
Rapid7 Vulnerability Database (full)
•added 2019/07/23 12:00 a.m.•12 views

CVE-2019-14243: Improper Input Validation

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service webserver panic and daemon crash via a crafted HAProxy PROXY v2 request with truncated source/destinatio...

7.5CVSS5.8AI score0.04295EPSS
SaveExploits1References2
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