Security update for libsoup2 SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2026:20354-1 Final 1 1 2026-03-13T08:41:04Z current 2026-03-13T08:41:04Z 2026-03-13T08:41:04Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for libsoup2 This update for libsoup2 fixes the following issues: - CVE-2025-4476: null pointer dereference may lead to denial of service (bsc#1243422). - CVE-2025-14523: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (bsc#1254876). - CVE-2025-32049: Denial of Service attack to websocket server (bsc#1240751). - CVE-2026-0716: improper bounds handling may allow out-of-bounds read (bsc#1256418). - CVE-2026-0719: stack-based buffer overflow in NTLM authentication can lead to arbitrary code execution (bsc#1256399). - CVE-2026-1467: lack of input sanitization can lead to unintended or unauthorized HTTP requests (bsc#1257398). - CVE-2026-1539: proxy authentication credentials leaked via the Proxy-Authorization header when handling HTTP redirects (bsc#1257441). - CVE-2026-1760: improper handling of HTTP requests combining certain headers by SoupServer can lead to HTTP request smuggling and potential DoS (bsc#1257597). - CVE-2026-2369: Buffer overread due to integer underflow when handling zero-length resources (bsc#1258120). - CVE-2026-2443: out-of-bounds read when processing specially crafted HTTP Range headers can lead to heap information disclosure to remote attackers (bsc#1258170). - CVE-2026-2708: HTTP request smuggling via duplicate Content-Length headers (bsc#1258508). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-Leap-16.0-378 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1240751 SUSE Bug 1240751 https://bugzilla.suse.com/1243422 SUSE Bug 1243422 https://bugzilla.suse.com/1254876 SUSE Bug 1254876 https://bugzilla.suse.com/1256399 SUSE Bug 1256399 https://bugzilla.suse.com/1256418 SUSE Bug 1256418 https://bugzilla.suse.com/1257398 SUSE Bug 1257398 https://bugzilla.suse.com/1257441 SUSE Bug 1257441 https://bugzilla.suse.com/1257597 SUSE Bug 1257597 https://bugzilla.suse.com/1258120 SUSE Bug 1258120 https://bugzilla.suse.com/1258170 SUSE Bug 1258170 https://bugzilla.suse.com/1258508 SUSE Bug 1258508 https://www.suse.com/security/cve/CVE-2025-14523/ SUSE CVE CVE-2025-14523 page https://www.suse.com/security/cve/CVE-2025-32049/ SUSE CVE CVE-2025-32049 page https://www.suse.com/security/cve/CVE-2025-4476/ SUSE CVE CVE-2025-4476 page https://www.suse.com/security/cve/CVE-2026-0716/ SUSE CVE CVE-2026-0716 page https://www.suse.com/security/cve/CVE-2026-0719/ SUSE CVE CVE-2026-0719 page https://www.suse.com/security/cve/CVE-2026-1467/ SUSE CVE CVE-2026-1467 page https://www.suse.com/security/cve/CVE-2026-1539/ SUSE CVE CVE-2026-1539 page https://www.suse.com/security/cve/CVE-2026-1760/ SUSE CVE CVE-2026-1760 page https://www.suse.com/security/cve/CVE-2026-2369/ SUSE CVE CVE-2026-2369 page https://www.suse.com/security/cve/CVE-2026-2443/ SUSE CVE CVE-2026-2443 page https://www.suse.com/security/cve/CVE-2026-2708/ SUSE CVE CVE-2026-2708 page openSUSE Leap 16.0 libsoup-2_4-1-2.74.3-160000.4.1 libsoup2-devel-2.74.3-160000.4.1 libsoup2-lang-2.74.3-160000.4.1 typelib-1_0-Soup-2_4-2.74.3-160000.4.1 libsoup-2_4-1-2.74.3-160000.4.1 as a component of openSUSE Leap 16.0 libsoup2-devel-2.74.3-160000.4.1 as a component of openSUSE Leap 16.0 libsoup2-lang-2.74.3-160000.4.1 as a component of openSUSE Leap 16.0 typelib-1_0-Soup-2_4-2.74.3-160000.4.1 as a component of openSUSE Leap 16.0 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 backend but the backend interprets it as destined for another host. This discrepancy enables request-smuggling style attacks, cache poisoning, or bypassing host-based access controls when an attacker supplies duplicate Host headers. CVE-2025-14523 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-14523.html CVE-2025-14523 https://bugzilla.suse.com/1254876 SUSE Bug 1254876 A flaw was found in libsoup. The SoupWebsocketConnection may accept a large WebSocket message, which may cause libsoup to allocate memory and lead to a denial of service (DoS). CVE-2025-32049 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-32049.html CVE-2025-32049 https://bugzilla.suse.com/1240751 SUSE Bug 1240751 https://bugzilla.suse.com/1250562 SUSE Bug 1250562 A denial-of-service vulnerability has been identified in the libsoup HTTP client library. This flaw can be triggered when a libsoup client receives a 401 (Unauthorized) HTTP response containing a specifically crafted domain parameter within the WWW-Authenticate header. Processing this malformed header can lead to a crash of the client application using libsoup. An attacker could exploit this by setting up a malicious HTTP server. If a user's application using the vulnerable libsoup library connects to this malicious server, it could result in a denial-of-service. Successful exploitation requires tricking a user's client application into connecting to the attacker's malicious server. CVE-2025-4476 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-4476.html CVE-2025-4476 https://bugzilla.suse.com/1243422 SUSE Bug 1243422 A flaw was found in libsoup's WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds. This can cause unintended memory exposure or a crash. Applications using libsoup's WebSocket support with this configuration may be impacted. CVE-2026-0716 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-0716.html CVE-2026-0716 https://bugzilla.suse.com/1256418 SUSE Bug 1256418 A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk. CVE-2026-0719 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-0719.html CVE-2026-0719 https://bugzilla.suse.com/1256399 SUSE Bug 1256399 A flaw was found in libsoup, an HTTP client library. This vulnerability, known as CRLF (Carriage Return Line Feed) Injection, occurs when an HTTP proxy is configured and the library improperly handles URL-decoded input used to create the Host header. A remote attacker can exploit this by providing a specially crafted URL containing CRLF sequences, allowing them to inject additional HTTP headers or complete HTTP request bodies. This can lead to unintended or unauthorized HTTP requests being forwarded by the proxy, potentially impacting downstream services. CVE-2026-1467 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-1467.html CVE-2026-1467 https://bugzilla.suse.com/1257398 SUSE Bug 1257398 A flaw was found in the libsoup HTTP library that can cause proxy authentication credentials to be sent to unintended destinations. When handling HTTP redirects, libsoup removes the Authorization header but does not remove the Proxy-Authorization header if the request is redirected to a different host. As a result, sensitive proxy credentials may be leaked to third-party servers. Applications using libsoup for HTTP communication may unintentionally expose proxy authentication data. CVE-2026-1539 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-1539.html CVE-2026-1539 https://bugzilla.suse.com/1257441 SUSE Bug 1257441 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, causing SoupServer to fail to close the connection as required by RFC 9112. This allows the attacker to smuggle additional requests over the persistent connection, leading to unintended request processing and potential denial-of-service (DoS) conditions. CVE-2026-1760 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-1760.html CVE-2026-1760 https://bugzilla.suse.com/1257597 SUSE Bug 1257597 unknown CVE-2026-2369 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-2369.html CVE-2026-2369 https://bugzilla.suse.com/1258120 SUSE Bug 1258120 A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems. When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges. In certain build configurations, this could allow a remote attacker to access portions of server memory beyond the intended response. Exploitation requires a vulnerable configuration and access to a server using the embedded SoupServer component. CVE-2026-2443 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-2443.html CVE-2026-2443 https://bugzilla.suse.com/1258170 SUSE Bug 1258170 unknown CVE-2026-2708 openSUSE Leap 16.0:libsoup-2_4-1-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-devel-2.74.3-160000.4.1 openSUSE Leap 16.0:libsoup2-lang-2.74.3-160000.4.1 openSUSE Leap 16.0:typelib-1_0-Soup-2_4-2.74.3-160000.4.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-2708.html CVE-2026-2708 https://bugzilla.suse.com/1258508 SUSE Bug 1258508