Vulnerability · Gnome Libsoup
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.
CVSS score (v3.1)8.6High
Fixed in 3.7.3
Not on CISA KEV list
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- Published by NVD
- Last updated by NVD
Affected products
| Product | Versions |
|---|---|
| Gnome Libsoup | up to before 3.7.3 |
| Redhat Enterprise Linux | 10.0 only; 7.0 only; 8.0 only; 9.0 only |
Sources: NVD and CISA known exploited vulnerabilities catalogue.