Threat database

Multiple heap buffer overflow vulnerabilities have been identified in libsoup3, an HTTP library used in GNOME applications for asynchronous HTTP communication. These vulnerabilities affect various aspects of data processing, including base64 decoding of data-URIs, WebSocket message handling, and buffer growth during WebSocket operations. Red Hat has issued security updates addressing these issues in Red Hat Enterprise Linux 10 and related products.

Multiple security vulnerabilities have been identified in libsoup3, an HTTP library used in GNOME applications, including remote denial of service via unbounded decompression and oversized control frame protocol violations in WebSocket connections, and a heap use-after-free in the HTTP/2 client triggered by a GOAWAY frame during body upload. Red Hat has released security updates addressing these issues in Red Hat Enterprise Linux 10 and related products.

Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications. This enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion, very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who want it), but the SOAP parts were removed long ago. Security Fix(es): * libsoup: Signed to Unsigned Conversion Error Leading to Stack-Based Buffer Overflow in libsoup NTLM Authentication (CVE-2026-0719) * libsoup: Stack-Based Buffer Overflow in libsoup Multipart Response Parsingmultipart HTTP response (CVE-2026-1761) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications. This enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion, very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who want it), but the SOAP parts were removed long ago. Security Fix(es): * libsoup: Integer Overflow in Cookie Expiration Date Handling in libsoup (CVE-2025-4945) * libsoup: Out-of-Bounds Read in Cookie Date Handling of libsoup HTTP Library (CVE-2025-11021) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.