{"id":"CVE-2026-39777","kind":"vulnerability","aliases":["CVE-2026-39777"],"related":[],"title":"WCFM Membership WordPress plugin: missing authorization check, versions through 2.12.0","description":"Missing Authorization vulnerability in WC Lovers WCFM Membership wc-multivendor-membership allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WCFM Membership: from n/a through 2.12.0.","summary":"The WCFM Membership plugin for WordPress has a missing authorization check that allows access control to be bypassed through incorrectly configured access levels. The sources do not say what data or actions an attacker gains beyond that.","severity":"medium","cvss":4.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","wc-multivendor-membership","wcfm","woocommerce","wordpress"],"not_affected_if":["plugin-not-installed"],"how_to_check":"- Check whether the `wc-multivendor-membership` plugin is installed and its version in the WordPress plugins list","fix":"- WCFM Membership: a fixed version is not stated in the sources; they only say affected versions run from n/a through `2.12.0`","status":"open","published_at":"2026-11-03T17:18:13+00:00","first_seen_at":"2026-11-03T17:21:57+00:00","triaged_at":"2026-11-03T17:24:34+00:00","updated_at":"2026-11-03T17:24:34+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-11-03T17:24:34Z","model":"claude-haiku-5-5","output":{"fix":"- WCFM Membership: a fixed version is not stated in the sources; they only say affected versions run from n/a through `2.12.0`\n- unknown beyond that","reach":"internet","title":"WCFM Membership WordPress plugin: missing authorization check, versions through 2.12.0","impact":"medium","summary":"The WCFM Membership plugin for WordPress has a missing authorization check that allows access control to be bypassed through incorrectly configured access levels. The sources do not say what data or actions an attacker gains beyond that.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","woocommerce","wcfm","wc-multivendor-membership"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"unknown access control bypass; impact not detailed in sources","analyst_note":"Find the NVD or WPScan entry for CVE-2026-39777 to confirm the fixed version and what access the bypass grants.","how_to_check":"- Check whether the `wc-multivendor-membership` plugin is installed and its version in the WordPress plugins list\n- unknown for further steps; the sources do not say","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed"],"who_is_affected":"The sources say the plugin is affected from its earliest version through 2.12.0, which covers sites running the WCFM Membership add-on for WooCommerce multivendor marketplaces. Sites that do not run this plugin can skip it. Whether a default configuration is exposed is unknown.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000704,"input_tokens":4119,"output_tokens":584,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-39777':13A,16A '2.12.0':10A,88C 'access':38B,46B,77C 'action':56B 'affect':82C 'allow':37B,73C 'attack':58B 'author':6A,34B,62C 'beyond':60B 'bypass':42B 'check':7A,35B 'configur':45B,76C 'control':39B,78C 'cve':11A,14A 'data':54B 'exploit':74C 'gain':59B 'incorrect':44B,75C 'issu':81C 'level':47B 'levels.this':80C 'lover':66C 'membership':2A,21B,27B,68C,72C,84C 'miss':5A,33B,61C 'multivendor':20B,71C 'n/a':86C 'packag':17B 'plugin':4A,28B 'say':52B 'secur':79C 'sourc':49B 'version':8A 'vulner':63C 'wc':19B,65C,70C 'wc-multivendor-membership':18B,69C 'wcfm':1A,22B,26B,67C,83C 'woocommerc':23B 'wordpress':3A,24B,30B","nicknames":[],"mitigations":[],"who_affected":"The sources say the plugin is affected from its earliest version through 2.12.0, which covers sites running the WCFM Membership add-on for WooCommerce multivendor marketplaces. Sites that do not run this plugin can skip it. Whether a default configuration is exposed is unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","package","wcfm","wcmultivendormembership","woocommerce","wordpress"],"first_public_at":"2026-11-03T17:18:13+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-39777","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39777","severity":null,"published_at":"2026-11-03T17:18:13+00:00","modified_at":"2026-11-03T17:18:13+00:00","first_seen_at":"2026-11-03T17:21:57+00:00","fetched_at":"2026-11-03T17:21:57+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"}