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.
{
"cna_assigner": "redhat",
"cwe_ids": [
"CWE-843"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102556.json"
}{
"cpe": "cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "3.7.3"
}
],
"source": "CPE_RANGE"
}
{
"cpe": "cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "3.7.3"
}
],
"source": "CPE_RANGE"
}