webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules

Summary An attacker can cause excessive memory allocation in webtransport-go by sending an unknown WebTransport capsule with a large payload. The implementation skips unknown capsules by reading the entire capsule body into memory, instead of draining it without retaining the data. This can lead ...

PT-2026-64438

Summary An attacker can cause excessive memory allocation in webtransport-go by sending an unknown WebTransport capsule with a large payload. The implementation skips unknown capsules by reading the entire capsule body into memory, instead of draining it without retaining the data. This can lead ...

CVE-2026-59724

A flaw was found in Engine.IO. When Engine.IO servers have WebTransport enabled, a remote attacker can craft a session ID to resolve an inherited property of the clients object during WebTransport upgrade handling. This can lead to a TypeError, resulting in a denial of service DoS for the server...

CVE-2026-59724

Socket.IO enables bidirectional and low-latency communication for every platform. From 6.5.0 before 6.6.7, Engine.IO servers with WebTransport enabled can resolve a crafted session ID such as proto through an inherited property of the clients object during WebTransport upgrade handling, causing a...

EUVD-2026-42312

Socket.IO enables bidirectional and low-latency communication for every platform. From 6.5.0 before 6.6.7, Engine.IO servers with WebTransport enabled can resolve a crafted session ID such as proto through an inherited property of the clients object during WebTransport upgrade handling, causing a...

CVE-2026-59724 Socket.IO: Engine.IO WebTransport SID DoS

Socket.IO enables bidirectional and low-latency communication for every platform. From 6.5.0 before 6.6.7, Engine.IO servers with WebTransport enabled can resolve a crafted session ID such as proto through an inherited property of the clients object during WebTransport upgrade handling, causing a...

CVE-2026-59724

Socket.IO’s Engine.IO component is affected in versions 6.5.0–6.6.6 when WebTransport is enabled. During a WebTransport upgrade, processing a crafted session ID such as proto on an inherited property of the clients object can trigger a TypeError, leading to a denial of service. The issue has been...

CVE-2026-59724 Socket.IO: Engine.IO WebTransport SID DoS

Socket.IO enables bidirectional and low-latency communication for every platform. From 6.5.0 before 6.6.7, Engine.IO servers with WebTransport enabled can resolve a crafted session ID such as proto through an inherited property of the clients object during WebTransport upgrade handling, causing a...

PT-2026-56487

Name of the Vulnerable Software and Affected Versions Socket.IO versions 6.5.0 through 6.6.6 Description Engine.IO servers with WebTransport enabled are susceptible to a denial of service. During WebTransport upgrade handling, the server can resolve a crafted session ID, such as proto , through a...

engine.io: Engine.IO: Denial of Service via crafted WebTransport session ID

A flaw was found in Engine.IO. When Engine.IO servers have WebTransport enabled, a remote attacker can craft a session ID to resolve an inherited property of the clients object during WebTransport upgrade handling. This can lead to a TypeError, resulting in a denial of service DoS for the server...

Astra Linux – Vulnerability in Chromium

The use of after-free in WebTransport in Google Chrome before version 109.0.5414.119 allowed a remote attacker to potentially exploit heap corruption through a crafted HTML page. Chromium security severity: High...

SUSE CVE-2026-21434

webtransport-go is an implementation of the WebTransport protocol. From 0.3.0 to 0.9.0, an attacker can cause excessive memory consumption in webtransport-go's session implementation by sending a WTCLOSESESSION capsule containing an excessively large Application Error Message. The implementation...

SUSE CVE-2026-21435

webtransport-go is an implementation of the WebTransport protocol. Prior to v0.10.0, an attacker can cause a denial of service in webtransport-go by preventing or indefinitely delaying WebTransport session closure. A malicious peer can withhold QUIC flow control credit on the CONNECT stream,...

SUSE CVE-2026-21438

webtransport-go is an implementation of the WebTransport protocol. Prior to 0.10.0, an attacker can cause unbounded memory consumption repeatedly creating and closing many WebTransport streams. Closed streams were not removed from an internal session map, preventing garbage collection of their...

GHSA-J9WF-6R2X-HQMX Centrifugo v6.6.0 dependency vulnerabilities

Summary Centrifugo v6.6.0 binary is compiled with Go 1.25.5 and statically links github.com/quic-go/webtransport-go v0.9.0, having 7 known CVEs Go standard library — compiled with Go 1.25.5: | CVE | Severity | CVSS | Fixed In | |-----|----------|------|----------| | CVE-2025-68121 | CRITICAL | 10...

Centrifugo v6.6.0 dependency vulnerabilities

Summary Centrifugo v6.6.0 binary is compiled with Go 1.25.5 and statically links github.com/quic-go/webtransport-go v0.9.0, having 7 known CVEs Go standard library — compiled with Go 1.25.5: | CVE | Severity | CVSS | Fixed In | |-----|----------|------|----------| | CVE-2025-68121 | CRITICAL | 10...

GO-2026-4485 webtransport-go: Memory Exhaustion Attack due to Missing Length Check in WT_CLOSE_SESSION Capsule in github.com/quic-go/webtransport-go

webtransport-go: Memory Exhaustion Attack due to Missing Length Check in WTCLOSESESSION Capsule in github.com/quic-go/webtransport-go...

GO-2026-4488 webtransport-go: CloseWithError can block indefinitely in github.com/quic-go/webtransport-go

webtransport-go: CloseWithError can block indefinitely in github.com/quic-go/webtransport-go...

GO-2026-4483 webtransport-go: Memory Exhaustion Attack due to Missing Cleanup of Streams Map in github.com/quic-go/webtransport-go

webtransport-go: Memory Exhaustion Attack due to Missing Cleanup of Streams Map in github.com/quic-go/webtransport-go...

CVE-2026-21435

webtransport-go is an implementation of the WebTransport protocol. Prior to v0.10.0, an attacker can cause a denial of service in webtransport-go by preventing or indefinitely delaying WebTransport session closure. A malicious peer can withhold QUIC flow control credit on the CONNECT stream,...