CVE-2026-102559
HIGH
NVD
CVSS Score
8.6
Severity
HIGH
Published
Sep 29, 2026
Vendor
unknown
Description
A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, causing a heap buffer overflow.