A flaw was found in libsoup. When max-incoming-payload-size is unlimited (0), SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflow while reading frame data.
{
"cna_assigner": "redhat",
"cwe_ids": [
"CWE-125"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102558.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"
}