{"vulnerability": "CVE-2026-28759", "sightings": [{"uuid": "35ec3bc7-f68e-48b7-afb8-deb7dd9cc36d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-28759", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mm4hr67zby2q", "content": "CVE-2026-28759 - Insufficient authorization in shared channel membership sync allows remote cluster to remove users from arbitrary channels\nCVE ID : CVE-2026-28759\n \n Published : May 18, 2026, 6:50 a.m. | 1\u00a0hour, 21\u00a0minutes ago\n \n Description : Mattermost versions 11.5.x <=...", "creation_timestamp": "2026-05-18T08:34:40.740994Z"}]}