CVE-2026-85024 undici vulnerable to Denial of Service via unhandled error in WebSocket permessage-deflate decompression

undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit. When a remote peer sends a compressed payload that crosses the built-in 128 MiB...

CVE-2026-85024

undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit. When a remote peer sends a compressed payload that crosses the built-in 128 MiB...

PT-2026-85807

Name of the Vulnerable Software and Affected Versions undici versions 6.25.0 through 6.28.0 undici versions 7.28.0 through 7.29.0 undici versions 8.1.0 through 8.10.1 Description A flaw in the WebSocket client's permessage-deflate size-limit cleanup removes all listeners from the internal zlib...

CVE-2026-85024: Uncaught Exception

undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit. When a remote peer sends a compressed payload that crosses the built-in 128 MiB...

CVE-2026-85024: Uncaught Exception

undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error listener, while that stream can still emit. When a remote peer sends a compressed payload that crosses the built-in 128 MiB...

Linux Distros Unpatched Vulnerability : CVE-2026-85024

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - undici bundles a WebSocket client whose permessage-deflate size-limit cleanup removes all listeners from the internal zlib inflate stream, including its error...

Unity Linux 20.1070e Security Update: rubygem-websocket-driver (UTSA-2026-104957)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104957 advisory. 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...

CVE-2026-5680

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,...

DEBIAN-CVE-2026-5680

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,...

CVE-2026-5680

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,...

EUVD-2026-67086

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,...

CVE-2026-5680 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,...

CVE-2026-5680 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,...

CVE-2026-5680

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,...

CVE-2026-5680

Undertow (specifically the Undertow-core component) is vulnerable to a Denial of Service (DoS) attack exploitable over the network without authentication. A remote attacker can send specially crafted WebSocket messages with the permessage-deflate extension negotiated, triggering excessive memory ...

CVE-2026-5680

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,...

CVE-2026-5680

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,...

PT-2026-82541

Name of the Vulnerable Software and Affected Versions Undertow affected versions not specified Description A flaw exists where a remote attacker can cause a Denial of Service DoS by sending specially crafted WebSocket messages with permessage-deflate negotiated. This leads to excessive memory...

CVE-2026-5680: Allocation of Resources Without Limits or Throttling

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,...

Linux Distros Unpatched Vulnerability : CVE-2026-5680

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate...