CVE-2026-102556

HighCVSS 8.6/10Last modified Oct 19, 2026

Description

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.

Metrics

CVSS 3.1 8.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Weakness enumeration

CWE-843

Affected software

No affected versions have been published.

Timeline

Published: Sep 29, 2026
Last modified: Oct 19, 2026
NVD status: Modified

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