SoupWebsocketExtensionDeflate: libsoup: libsoup: WebSocket permessage-deflate Unbounded Decompression Remote Denial of Service

A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension. The extension's decompression loop inflate processes data in chunks without enforcing an upper boundary limit on the output buffer size. While libsoup limits the incoming compressed frame size via...

SoupWebsocketExtensionDeflate: libsoup: libsoup: WebSocket permessage-deflate Unbounded Decompression Remote Denial of Service

A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension. The extension's decompression loop inflate processes data in chunks without enforcing an upper boundary limit on the output buffer size. While libsoup limits the incoming compressed frame size via...

Moderate: Red Hat Security Advisory: libsoup security update

An update for libsoup is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerabilit...

RHEL 8 : libsoup (RHSA-2026:70598)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:70598 advisory. The libsoup packages provide an HTTP client and server library for GNOME. Security Fixes: SoupWebsocketExtensionDeflate: libsoup: libsoup:...

RHEL 8 : libsoup (RHSA-2026:70599)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:70599 advisory. The libsoup packages provide an HTTP client and server library for GNOME. Security Fixes: SoupWebsocketExtensionDeflate: libsoup: libsoup:...

Linux Distros Unpatched Vulnerability : CVE-2026-83599

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, a...

Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation

Summary Autobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096...

GHSA-HXP9-W8X3-P566 Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation

Summary Autobahn Python enforces maxMessagePayloadSize against the compressed WebSocket frame length before permessage-deflate inflation, then delivers the inflated message to application callbacks without a second size check. A client frame that is only 22 compressed bytes can inflate to 4096...

EUVD-2026-83415

Autobahn Python permessage-deflate bypasses maxMessagePayloadSize after inflation...

DEBIAN-CVE-2026-83599

Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, and src/web/websocket/websocket-compression.c allows websocketclientdecompressmessage to grow decompressed output toward...

CVE-2026-83599

Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, and src/web/websocket/websocket-compression.c allows websocketclientdecompressmessage to grow decompressed output toward...

CVE-2026-83599

The open source observability tool Netdata contains a vulnerability in its unauthenticated WebSocket server prior to version 2.11.0 . The issue resides in src/web/websocket/websocket-compression.c, where the websocket_client_decompress_message() function allows decompressed output to grow toward ...

CVE-2026-83599 Netdata: WebSocket Decompression Bomb

Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, and src/web/websocket/websocket-compression.c allows websocketclientdecompressmessage to grow decompressed output toward...

EUVD-2026-84561

Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, and src/web/websocket/websocket-compression.c allows websocketclientdecompressmessage to grow decompressed output toward...

undertow-core: Undertow: Denial of Service via WebSocket permessage-deflate processing

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer method using exponential doubling,...

undertow-core: Undertow: Denial of Service via WebSocket permessage-deflate processing

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer method using exponential doubling,...

undertow-core: Undertow: Denial of Service via WebSocket permessage-deflate processing

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer method using exponential doubling,...

Moderate: Red Hat Security Advisory: libsoup security update

An update for libsoup is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring Syst...

SoupWebsocketExtensionDeflate: libsoup: libsoup: WebSocket permessage-deflate Unbounded Decompression Remote Denial of Service

A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension. The extension's decompression loop inflate processes data in chunks without enforcing an upper boundary limit on the output buffer size. While libsoup limits the incoming compressed frame size via...

PT-2026-96845

Name of the Vulnerable Software and Affected Versions Netdata versions prior to 2.11.0 Description The unauthenticated WebSocket server negotiates permessage-deflate before authentication. In the file src/web/websocket/websocket-compression.c, the function websocket client decompress message allo...