{"id":"CVE-2026-80069","kind":"vulnerability","aliases":["CVE-2026-80069"],"related":[],"title":"MasterStudy LMS WordPress plugin: any logged-in user can trigger error disclosure","description":"MasterStudy LMS plugin for WordPress before 3.7.50 contains a missing authorization vulnerability that allows any authenticated user, including Subscribers, to trigger the stm_lms_send_test_email_ajax AJAX action without capability or nonce validation. Attackers can invoke this handler directly or via cross-site request forgery to cause an uncaught PHP fatal error that, when display_errors is enabled, discloses the absolute filesystem path of the plugin.","summary":"Before version 3.7.50, the MasterStudy LMS plugin for WordPress lets any authenticated user, including Subscribers, call the test-email AJAX handler without a capability or nonce check. The call can cause a PHP fatal error that, when display_errors is on, reveals the server's absolute plugin path.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["masterstudy-lms","package","php","wordpress"],"not_affected_if":["display-errors-off","version-3.7.50-or-later"],"how_to_check":"- Check the installed MasterStudy LMS version in the WordPress admin plugin list; affected if below `3.7.50`.\n- Check whether `display_errors` is enabled in `php.ini` or the WordPress debug settings.","fix":"- MasterStudy LMS plugin: move to `3.7.50` or later.","status":"open","published_at":"2026-10-29T15:17:24+00:00","first_seen_at":"2026-10-29T15:25:40+00:00","triaged_at":"2026-10-29T15:26:48+00:00","updated_at":"2026-10-29T15:26:48+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-29T15:26:48Z","model":"claude-haiku-5-5","output":{"fix":"- MasterStudy LMS plugin: move to `3.7.50` or later.","reach":"internet","title":"MasterStudy LMS WordPress plugin: any logged-in user can trigger error disclosure","impact":"low","summary":"Before version 3.7.50, the MasterStudy LMS plugin for WordPress lets any authenticated user, including Subscribers, call the test-email AJAX handler without a capability or nonce check. The call can cause a PHP fatal error that, when display_errors is on, reveals the server's absolute plugin path.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","masterstudy-lms","php"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"Plugin filesystem path revealed to logged-in users via PHP errors","analyst_note":"","how_to_check":"- Check the installed MasterStudy LMS version in the WordPress admin plugin list; affected if below `3.7.50`.\n- Check whether `display_errors` is enabled in `php.ini` or the WordPress debug settings.","plain_action":"","needs_analyst":false,"not_affected_if":["version-3.7.50-or-later","display-errors-off"],"who_is_affected":"Sites running the MasterStudy LMS WordPress plugin before 3.7.50, where any logged-in account (including the lowest Subscriber role) can reach the test-email AJAX action. The exposure is information disclosure of the plugin path, which matters most when PHP error display is on. Sites on a later version or without this plugin can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000712,"input_tokens":4189,"output_tokens":586,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-80069':16A,19A '3.7.50':28B,81C 'absolut':72B,138C 'action':104C 'ajax':46B,102C,103C 'allow':88C 'attack':110C 'authent':37B,90C 'author':85C 'call':41B,55B 'capabl':50B,106C 'caus':57B,124C 'check':53B 'contain':82C 'cross':119C 'cross-sit':118C 'cve':14A,17A 'direct':115C 'disclos':136C 'disclosur':13A 'display':64B,132C 'email':45B,101C 'enabl':135C 'error':12A,61B,65B,129C,133C 'fatal':60B,128C 'filesystem':139C 'forgeri':122C 'handler':47B,114C 'includ':39B,92C 'invok':112C 'let':35B 'lms':2A,22B,31B,76C,98C 'log':7A 'logged-in':6A 'masterstudi':1A,21B,30B,75C 'masterstudy-lm':20B 'miss':84C 'nonc':52B,108C 'packag':23B 'path':74B,140C 'php':24B,59B,127C 'plugin':4A,32B,73B,77C,143C 'request':121C 'reveal':68B 'send':99C 'server':70B 'site':120C 'stm':97C 'subscrib':40B,93C 'test':44B,100C 'test-email':43B 'trigger':11A,95C 'uncaught':126C 'user':9A,38B,91C 'valid':109C 'version':27B 'via':117C 'vulner':86C 'without':48B,105C 'wordpress':3A,25B,34B,79C","nicknames":[],"mitigations":[],"who_affected":"Sites running the MasterStudy LMS WordPress plugin before 3.7.50, where any logged-in account (including the lowest Subscriber role) can reach the test-email AJAX action. The exposure is information disclosure of the plugin path, which matters most when PHP error display is on. Sites on a later version or without this plugin can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T15:17:24+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-80069","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80069","severity":null,"published_at":"2026-10-29T15:17:24+00:00","modified_at":"2026-10-29T15:17:24+00:00","first_seen_at":"2026-10-29T15:25:40+00:00","fetched_at":"2026-10-29T15:25:40+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}