CVE-2026-54463

The CVE-2026-54463 issue affects the websocket-driver WebSocket protocol handler (prior to version 0.8.1). The root cause is a length header in draft WebSocket protocol frames that can encode an arbitrarily large integer, allowing a peer to send an indefinite sequence of 0x80+ bytes that are pars...

CVE-2026-54463 websocket-driver: Memory exhaustion via abuse of protocol length headers

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

CVE-2026-54463

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

EUVD-2026-45310

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

CVE-2026-54463 websocket-driver: Memory exhaustion via abuse of protocol length headers

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

CVE-2026-54463

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

CVE-2026-54463

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an...

EUVD-2026-45309

Impact If this library is used in tandem with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the si...

CVE-2026-54464 websocket-driver: Resource limit bypass via message compression

Impact If this library is used in tandem with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the si...

CVE-2026-54464 websocket-driver: Resource limit bypass via message compression

Impact If this library is used in tandem with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the si...

CVE-2026-54464 websocket-driver: Resource limit bypass via message compression

Impact If this library is used in tandem with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the si...

CVE-2026-54464

The CVE-2026-54464 issue affects the websocket-driver Ruby library. When used with the permessage-deflate extension, WebSocket servers/clients can accept messages larger than the configured maximum because length checks use the compressed data size (frame length headers) instead of the decompress...

CVE-2026-54464

Impact If this library is used in tandem with the permessage-deflate extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the si...

CVE-2026-54464

Impact If this library is used in tandem with the "permessage-deflate" extension, a WebSocket server or client can be made to accept messages that are larger than the configured maximum message size. This is because this limit is checked against the message frames' length headers, which give the...

CVE-2026-51082

A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment PVE 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-container before 6.1.3 PVE 9.x and before 5.3.4 PVE 8.x allows an attacker with...

libevent: Libevent: Remote denial of service via unbounded memory accumulation in WebSocket server

A flaw was found in Libevent. An unauthenticated remote client can exploit this vulnerability by repeatedly sending fragmented WebSocket frames to the Libevent WebSocket server. Due to a lack of a total message-size limit, these fragmented frames accumulate in memory without bound, leading to...

CVE-2026-62220

OpenClaw 2026.2.25 before 2026.5.26 allow a lower-trust caller or configured input path to bypass non-browser rate limits on WebSocket authentication attempts. When the affected feature is enabled and reachable by lower-trust input, this can consume gateway resources and reduce service availabili...

Brute Force

Overview openclaw is a 🦞 OpenClaw — Personal AI Assistant Affected versions of this package are vulnerable to Brute Force via the WebSocket authentication. An attacker can exhaust gateway resources and reduce service availability by sending repeated authentication attempts that bypass rate...

CVE-2026-62220

Summary: CVE-2026-62220 affects OpenClaw 2026.2.25 prior to 2026.5.26, where a lower-trust caller or configured input path can bypass non-browser rate limits on WebSocket authentication attempts. What’s affected: OpenClaw WebSocket authentication flow when the rate-limiting feature is enabled and...

CVE-2026-62220 OpenClaw 2026.2.25 < 2026.5.26 WebSocket Rate Limit Bypass

OpenClaw 2026.2.25 before 2026.5.26 allow a lower-trust caller or configured input path to bypass non-browser rate limits on WebSocket authentication attempts. When the affected feature is enabled and reachable by lower-trust input, this can consume gateway resources and reduce service availabili...