CVE-2026-102556 — Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
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 i…
Published: 2026-09-29 · CVSS: 8.6 · CVSS 3.1
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 can trigger heap corruption or a crash upon receiving a crafted Pong.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7