Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS through the WebSocket decoder process. An attacker can exhaust server memory by sending oversized frames or fragmented messages without size limits. Details Denial of Service DoS describes a family of attacks, all...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS through the WebSocket decoder process. An attacker can exhaust server memory by sending oversized frames or fragmented messages without size limits. Details Denial of Service DoS describes a family of attacks, all...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS through the WebSocket decoder process. An attacker can exhaust server memory by sending oversized frames or fragmented messages without size limits. Details Denial of Service DoS describes a family of attacks, all...

CVE-2026-69210 Http4s: WebSocket decoder accepts negative length, causing infinite decode loop

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, WebSocket FrameTranscoder.bodyLength rejects extended payload lengths above Integer.MAXVALUE but permits negative 64-bit lengths. A remote client that completes a WebSocket handshake through an Ember server can send su...

CVE-2026-69210

Http4s , a Scala HTTP service library, is vulnerable to a denial of service via its WebSocket decoder. In versions prior to 0.23.35 and 1.0.0-M47 , FrameTranscoder.bodyLength rejects extended payload lengths above Integer.MAX_VALUE but incorrectly permits negative 64-bit lengths . A remote client...

CVE-2026-69210 Http4s: WebSocket decoder accepts negative length, causing infinite decode loop

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, WebSocket FrameTranscoder.bodyLength rejects extended payload lengths above Integer.MAXVALUE but permits negative 64-bit lengths. A remote client that completes a WebSocket handshake through an Ember server can send su...

CVE-2026-69209

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that...

CVE-2026-69209

Http4s , a Scala library for HTTP services, contains an unbounded memory buffering flaw in its shared WebSocket decoder . Defragmentation accumulates fragments without a size limit, and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that completes a WebSocket handsha...

CVE-2026-69209 Http4s: WebSocket decoder accepts unbounded message sizes

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that...

CVE-2026-69209 Http4s: WebSocket decoder accepts unbounded message sizes

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that...

CVE-2026-69209: Uncontrolled Resource Consumption

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, The shared WebSocket decoder permits unbounded message buffering because defragmentation accumulates fragments without a limit and FrameTranscoder accepts declared lengths up to Int.MaxValue. A remote client that...

The vulnerability of the QEMU hardware emulation software, which allows a hacker to trigger a service failure

The vulnerability of the VNC websocket frame decoder in the hardware emulation software QEMU is related to resource management errors. Exploiting this vulnerability allows a malicious actor to cause service failures such as increased memory and computational resources usage by sending HTTP header...

CVE-2015-1779

The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service memory and CPU consumption via a large 1 websocket payload or 2 HTTP headers section...

CVE-2015-1779

The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service memory and CPU consumption via a large 1 websocket payload or 2 HTTP headers section...

netty: DoS via memory exhaustion during data aggregation

A flaw was found in the WebSocket08FrameDecoder implementation that could allow a remote attacker to trigger an Out Of Memory Exception by issuing a series of TextWebSocketFrame and ContinuationWebSocketFrames. Depending on the server configuration, this could lead to a denial of service...

netty: DoS via memory exhaustion during data aggregation

A flaw was found in the WebSocket08FrameDecoder implementation that could allow a remote attacker to trigger an Out Of Memory Exception by issuing a series of TextWebSocketFrame and ContinuationWebSocketFrames. Depending on the server configuration, this could lead to a denial of service...

netty: DoS via memory exhaustion during data aggregation

A flaw was found in the WebSocket08FrameDecoder implementation that could allow a remote attacker to trigger an Out Of Memory Exception by issuing a series of TextWebSocketFrame and ContinuationWebSocketFrames. Depending on the server configuration, this could lead to a denial of service...

PT-2014-3528 · Netty · Netty

Name of the Vulnerable Software and Affected Versions: Netty versions 3.6.x through 3.6.8 Netty versions 3.7.x through 3.7.0 Netty versions 3.8.x through 3.8.1 Netty versions 3.9.x through 3.9.0 Netty versions 4.0.x through 4.0.18 Description: The issue allows remote attackers to cause a denial o...