{"affected":[{"defaultStatus":"unaffected","product":"Masterstudy - Education WordPress Theme","source":"CNA: Wordfence","vendor":"StylemixThemes","versions":[{"lessThanOrEqual":"4.8.151","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-13764","cwes":["CWE-862"],"description":"The Masterstudy - Education WordPress Theme theme for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.8.151. This is due to missing authorization and nonce validation on the `masterstudy_ms_stm_set_discard_transient` AJAX action. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to Administrator by setting the `stm_developer_access_token` transient and using the developer access auto-login flow to obtain administrator session cookies.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.8,"severity":"high","source":"CNA: Wordfence","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794483137421,"publishedAt":1794483137421,"references":[{"source":"CNA: Wordfence","tags":[],"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/ec898f73-d275-4624-911b-89d9a945ff92?source=cve"},{"source":"CNA: Wordfence","tags":[],"url":"https://themeforest.net/item/masterstudy-education-center-wordpress-theme/12170274"},{"source":"CNA: Wordfence","tags":[],"url":"https://docs.stylemixthemes.com/masterstudy-theme-documentation/extra-materials/changelog"}],"remediation":[],"revision":"00209ee4798f8eedeb8a8be30f272cd1c2522fb4b7d952c821329af51c1ff949","sources":[{"modifiedAt":1794483137421,"name":"CNA: Wordfence","retrievedAt":1794485382750,"url":"https://www.cve.org/CVERecord?id=CVE-2026-13764"}],"ssvc":null,"status":"published","title":"Masterstudy - Education WordPress Theme <= 4.8.151 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation","updatedAt":1794485382750}