libsoup, an HTTP client/server library for GNOME, contains multiple security flaws related to WebSocket frame handling. These include improper signal emission causing heap corruption or crashes, inadequate size checks during fragmented message reassembly leading to heap corruption or crashes, and a heap buffer overflow when constructing masked client frames with large payloads. These issues affect versions prior to 2.74.3-31.oe2403sp1 and have been fixed in that version.