Amazon Linux 2 : libsoup (ALAS-2026-3998)

The version of libsoup installed on the remote host is prior to 2.56.0-6. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3998 advisory. A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequatel...

Amazon Linux 2023 : libsoup, libsoup-devel (ALAS2023-2026-3212)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3212 advisory. 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...

Important: libsoup

Issue Overview: 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 implementati...

Important: libsoup

Issue Overview: 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 ca...

SUSE CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

AlmaLinux 9.2 [TuxCare] Security Update: libsoup / libsoup-devel / libsoup-doc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1776854729)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1776854729 advisory. - A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-complian...

CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

DEBIAN-CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

AZL-105543 CVE-2026-103399 affecting package libsoup 3.4.4-16

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

UBUNTU-CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

CVE-2026-103399

A vulnerability exists in SoupServer (libsoup) where an HTTP/1.x client sending a request with Expect: 100-continue and a request body can trigger request smuggling . If the server returns an early final (non-1xx) response before reading the body, it fails to drain the bytes or close the connecti...

CVE-2026-103399 Libsoup: soupserver: http/1 request smuggling via undrained expect: 100-continue body

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

EUVD-2026-90226

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

CVE-2026-103399 Libsoup: soupserver: http/1 request smuggling via undrained expect: 100-continue body

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

CVE-2026-103399

A flaw was found in SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early final non-1xx response before the body is read, the server neither drains the declared body bytes nor closes the connection. On a keep-aliv...

Linux Distros Unpatched Vulnerability : CVE-2026-103399

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 SoupServer libsoup. When an HTTP/1.x client sends a request with Expect: 100-continue and a request body, and SoupServer returns an early...

PT-2026-103492

Name of the Vulnerable Software and Affected Versions SoupServer libsoup affected versions not specified Description An issue exists where SoupServer fails to drain declared body bytes or close the connection when an HTTP/1.x client sends a request containing a request body and the Expect:...

Rocky Linux 9.6 [TuxCare] Security Update: libsoup / libsoup-devel / libsoup-doc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1776855452)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1776855452 advisory. - A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from...