{"id":"CVE-2026-88824","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-88824","summary":"The Master Blocks  WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that…","details":"The Master Blocks  WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that is output unescaped in the admin area, leading to Stored XSS that executes in the session of any administrator visiting a wp-admin page.","published":"2026-09-19T07:16:33.273","modified":"2026-09-19T14:17:02.290","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://wpscan.com/vulnerability/898fda0a-4d27-4def-ae6f-35bf25a8ae8d/"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T14:17:02.290"}}