{"id":"DEBIAN-CVE-2026-12478","details":"The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.","modified":"2026-09-17T08:47:36.335849578Z","published":"2026-07-14T10:16:30.957Z","upstream":["CVE-2026-12478"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-12478"}],"affected":[{"package":{"name":"libsoup3","ecosystem":"Debian:14","purl":"pkg:deb/debian/libsoup3?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.5-3","3.6.5-4","3.6.5-5","3.6.5-6","3.6.5-7","3.6.5-8","3.6.5-9","3.6.6-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12478.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"}]}