CVE-2026-102467

The io.vertx:vertx-core component in Eclipse Vert.x versions [4.0.0, 4.5.34], [5.0.0, 5.0.12], [5.1.0, 5.1.9], and [5.2.0, 5.2.0] contains a vulnerability in its WebSocket implementation . The root cause is a failure to define a maximum number of bytes allocation when decompressing frames or mess...

libsoup: libsoup: Heap buffer overflow during outgoing permessage-deflate buffer growth

A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow...

libsoup: libsoup: Heap buffer overflow from WebSocket Pong signal type confusion

A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap...

libsoup: libsoup: Heap buffer overflow during WebSocket client-frame masking

A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, causing a heap buffer overflow...

libsoup: libsoup: Heap buffer overflow during WebSocket receive-buffer growth

A flaw was found in libsoup. When max-incoming-payload-size is unlimited 0, SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflow while reading frame data...

libsoup: libsoup: Heap buffer overflow during WebSocket message reassembly

A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequately cap total message size against the limits of the underlying buffer type. A remote peer could send fragments that caused size truncation while the implementation still used th...

Important: Red Hat Security Advisory: libsoup security update

An update for libsoup is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

CLEANSTART-2026-HS68048 In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials

Security vulnerability affects the elasticsearch package. In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials...

CLEANSTART-2026-QG39895 undici's WebSocket client crashes the whole Node

CVE-2026-19534 affects multiple packages. undici's WebSocket client crashes the whole Node. See references for individual vulnerability details...

CLEANSTART-2026-TX86596 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 ...

CVE-2026-85024 affects multiple packages. 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. See references for individual vulnerability details...

CVE-2026-109932: Uncontrolled Resource Consumption

undici is an HTTP client library for Node.js. In versions 5.15.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its WebSocket client, including the bundled WebSocket exposed by Node.js, can be driven to exhaust process memory by a malicious or compromised WebSocket server. For...

CVE-2026-109855: Uncaught Exception

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

CVE-2026-102467: Allocation of Resources Without Limits or Throttling

In Eclipse Vert.x versions 4.0.0, 4.5.34 or 5.0.0,5.0.12 or 5.1.0,5.1.9 or 5.2.0, 5.2.0, the WebSocket implementation does not define a maximum number of bytes allocation when decompressing frames or messages. This can be used to implement DDOS attacks with a zip bomb. The impacted component is...

ALSA-2026:83384 Important: libsoup security update

The libsoup packages provide an HTTP client and server library for GNOME. Security Fixes: libsoup: libsoup: Heap buffer overflow from WebSocket Pong signal type confusion CVE-2026-102556 libsoup: libsoup: Heap buffer overflow during WebSocket message reassembly CVE-2026-102557 libsoup: libsoup:...

libsoup3 security update

3.6.5-20 - CVE-2026-102557 libsoup3: libsoup: Heap buffer overflow during WebSocket message reassembly 3.6.5-19 - CVE-2026-102556 libsoup3: libsoup: Heap buffer overflow from WebSocket Pong signal type confusion 3.6.5-18 - CVE-2026-102558 libsoup3: libsoup: Heap buffer overflow during WebSocket...

CVE-2026-109855

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

UBUNTU-CVE-2026-109855

undici is an HTTP client library for Node.js. In versions 8.11.0 and 8.11.1, its experimental WebSocket client, which is enabled by default when HTTP/2 is allowed, mishandles a failed WebSocket handshake over HTTP/2: the request is already marked completed, so the abort becomes a no-op and the...

Oracle Linux 10 : libsoup3 (ELSA-2026-83618)

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-83618 advisory. - CVE-2026-102557 libsoup3: libsoup: Heap buffer overflow during WebSocket message reassembly - CVE-2026-102556 libsoup3: libsoup: Heap buffer overfl...

RHEL 9 : libsoup (RHSA-2026:83384)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:83384 advisory. The libsoup packages provide an HTTP client and server library for GNOME. Security Fixes: libsoup: libsoup: Heap buffer overflow from...

AlmaLinux 9 : nodejs:22 (ALSA-2026:76750)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:76750 advisory. pacote: Pacote: Denial of Service via crafted spec.rawSpec value in addGitSha function CVE-2026-9496 undici: undici: Denial of Service via unrequested...