CVE-2026-59724: Improper Input Validation

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...

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-2026-4483 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...

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...

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,...

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...

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...

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...

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...

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,...

CVE-2026-21438

CVE-2026-21438 affects the webtransport-go implementation of WebTransport prior to 0.10.0. The issue arises when repeatedly creating and closing multiple WebTransport streams; closed streams are not removed from the internal session map, preventing garbage collection of their resources and leadin...

CVE-2026-21438 webtransport-go affected by a Memory Exhaustion Attack due to Missing Cleanup of Streams Map

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...

CVE-2026-21438 webtransport-go affected by a Memory Exhaustion Attack due to Missing Cleanup of Streams Map

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...