CVE-2026-102556
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.
- Published Sep 29, 2026
- CVSS 8.6 high
- 0.2% chance of exploitation in the next 30 days (EPSS)