{"id":"CVE-2026-102559","published":"2026-09-29T18:17:08.503","lastModified":"2026-09-29T21:29:07.663","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.","cvssScore":8.6,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-102559","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543285","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}