Important: libsoup

Issue Overview: A flaw in libsoup's HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one...

Amazon Linux 2023 : libsoup, libsoup-devel (ALAS2023-2026-1391)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1391 advisory. A flaw in libsoup's HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, ...

Amazon Linux 2023 : libsoup3, libsoup3-devel (ALAS2023-2026-1394)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1394 advisory. A flaw in libsoup's HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, ...

Moderate: Red Hat Security Advisory: OpenShift Container Platform 4.17.48 bug fix and security update

Red Hat OpenShift Container Platform release 4.17.48 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.17. Red Hat Product Security has rated this update as having a...

CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

DEBIAN-CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

AZL-76700 CVE-2026-1801 affecting package libsoup for versions less than 3.4.4-12

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

AZL-76736 CVE-2026-1801 affecting package libsoup 3.0.4-12

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

UBUNTU-CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

EUVD-2026-5176

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CVE-2026-1801

CVE-2026-1801 affects libsoup. The vulnerability stems from non-RFC-compliant parsing in soup_filter_input_stream_read_line(), allowing malformed chunk headers (for example, lone LF instead of CRLF) to enable HTTP Request Smuggling. A remote attacker can trigger this without authentication by sen...

CVE-2026-1801 Libsoup: libsoup: http request smuggling via malformed chunk headers

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CVE-2026-1801 Libsoup: libsoup: http request smuggling via malformed chunk headers

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CVE-2026-1801

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...

CLSA-2026-1769687040 libsoup: Fix of CVE-2025-14523

CVE-2025-14523: reject duplicate Host headers to prevent request smuggling, cache poisoning, and host-based access control bypass attacks...

SUSE CVE-2026-1760

A flaw was found in SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially crafted requests,...

CVE-2026-1801: Inconsistent Interpretation of HTTP Requests

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soupfilterinputstreamreadline logic, where libsoup accepts malformed chunk headers, such as lone line feed LF characters instead of the required...