{"id":"CVE-2026-80067","kind":"vulnerability","aliases":["CVE-2026-80067"],"related":[],"title":"MasterStudy LMS WordPress plugin: path traversal lets subscribers publish posts","description":"MasterStudy LMS plugin for WordPress before 3.7.50 contains a path traversal vulnerability that allows authenticated Subscriber-level users to import arbitrary WXR XML files by supplying directory traversal sequences in the stm_lms_step parameter passed to the stm_lms_import_sample_data AJAX action, which lacks capability checks and nonce verification. Attackers can traverse the file system to reference a reachable WXR file and have the handler publish its contained posts under their identity, enabling publication of attacker-chosen post type, title, content, and metadata.","summary":"Before version 3.7.50, the MasterStudy LMS plugin for WordPress lets any logged-in Subscriber-level user use directory traversal in the stm_lms_step parameter to import arbitrary WXR XML files. The import handler lacks capability and nonce checks, so an attacker can publish attacker-chosen posts, titles, content and metadata under their own identity.","severity":"medium","cvss":5.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["masterstudy-lms","package","self-hosted","wordpress"],"not_affected_if":["no-subscriber-accounts","plugin-3.7.50-or-later"],"how_to_check":"- Check the installed MasterStudy LMS plugin version in the WordPress admin under Plugins, or with `wp plugin get masterstudy-lms-learning-management-system --field=version` if WP-CLI is available.\n- Confirm whether the site allows open registration, since the attacker needs a Subscriber account.","fix":"- MasterStudy LMS plugin for WordPress: upgrade 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":"2026-10-29T15:26:44+00:00","updated_at":"2026-10-29T15:26:45+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-29T15:26:44Z","model":"claude-haiku-5-5","output":{"fix":"- MasterStudy LMS plugin for WordPress: upgrade to `3.7.50` or later.","reach":"internet","title":"MasterStudy LMS WordPress plugin: path traversal lets subscribers publish posts","impact":"medium","summary":"Before version 3.7.50, the MasterStudy LMS plugin for WordPress lets any logged-in Subscriber-level user use directory traversal in the stm_lms_step parameter to import arbitrary WXR XML files. The import handler lacks capability and nonce checks, so an attacker can publish attacker-chosen posts, titles, content and metadata under their own identity.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","masterstudy-lms","self-hosted"],"confidence":0.8,"fix_status":"available","needs_auth":"yes","worst_case":"Authenticated subscriber publishes arbitrary posts and metadata under their identity","analyst_note":"","how_to_check":"- Check the installed MasterStudy LMS plugin version in the WordPress admin under Plugins, or with `wp plugin get masterstudy-lms-learning-management-system --field=version` if WP-CLI is available.\n- Confirm whether the site allows open registration, since the attacker needs a Subscriber account.","plain_action":"","needs_analyst":false,"not_affected_if":["plugin-3.7.50-or-later","no-subscriber-accounts"],"who_is_affected":"Sites running the MasterStudy LMS plugin for WordPress before 3.7.50 are exposed. The attacker needs any authenticated Subscriber-level account, so sites with open registration or many low-privilege users carry more risk than sites with closed user lists.","user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000737,"input_tokens":4223,"output_tokens":629,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-80067':13A,16A '3.7.50':27B,89C 'action':128C 'ajax':127C 'allow':96C 'arbitrari':54B,104C 'attack':68B,72B,136C,163C 'attacker-chosen':71B,162C 'authent':97C 'capabl':62B,131C 'check':65B,132C 'chosen':73B,164C 'contain':90C,154C 'content':76B,168C 'cve':11A,14A 'data':126C 'directori':44B,110C 'enabl':159C 'file':57B,107C,140C,147C 'handler':60B,151C 'host':23B 'ident':82B,158C 'import':53B,59B,103C,124C 'lack':61B,130C 'let':7A,34B 'level':41B,100C 'lms':2A,19B,30B,49B,84C,116C,123C 'log':37B 'logged-in':36B 'masterstudi':1A,18B,29B,83C 'masterstudy-lm':17B 'metadata':78B,170C 'nonc':64B,134C 'packag':20B 'paramet':51B,118C 'pass':119C 'path':5A,92C 'plugin':4A,31B,85C 'post':10A,74B,155C,165C 'public':160C 'publish':9A,70B,152C 'reachabl':145C 'refer':143C 'sampl':125C 'self':22B 'self-host':21B 'sequenc':112C 'step':50B,117C 'stm':48B,115C,122C 'subscrib':8A,40B,99C 'subscriber-level':39B,98C 'suppli':109C 'system':141C 'titl':75B,167C 'travers':6A,45B,93C,111C,138C 'type':166C 'use':43B 'user':42B,101C 'verif':135C 'version':26B 'vulner':94C 'wordpress':3A,24B,33B,87C 'wxr':55B,105C,146C 'xml':56B,106C","nicknames":[],"mitigations":[],"who_affected":"Sites running the MasterStudy LMS plugin for WordPress before 3.7.50 are exposed. The attacker needs any authenticated Subscriber-level account, so sites with open registration or many low-privilege users carry more risk than sites with closed user lists.","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:L/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-2026-80067","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80067","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"}