{"id":"CVE-2026-39744","kind":"vulnerability","aliases":["CVE-2026-39744"],"related":[],"title":"WCFM Membership WordPress plugin: stored XSS through 2.12.0","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WC Lovers WCFM Membership wc-multivendor-membership allows Stored XSS.This issue affects WCFM Membership: from n/a through 2.12.0.","summary":"The WCFM Membership plugin for WooCommerce multivendor stores does not neutralize input before rendering it into pages, allowing stored cross-site scripting. An attacker who can store malicious content can run script in other users' browsers, including site staff.","severity":"high","cvss":7.1,"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 the installed version of the `wc-multivendor-membership` plugin in the WordPress admin under Plugins.\n- Confirm whether the WCFM Membership plugin is active on the site.","fix":"- WCFM Membership: fixed version not stated in the sources; the affected range is through `2.12.0`.","status":"open","published_at":"2026-11-06T08:17:25+00:00","first_seen_at":"2026-11-06T08:40:33+00:00","triaged_at":"2026-11-06T08:42:34+00:00","updated_at":"2026-11-06T08:42:34+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-06T08:42:34Z","model":"claude-haiku-5-5","output":{"fix":"- WCFM Membership: fixed version not stated in the sources; the affected range is through `2.12.0`.","reach":"internet","title":"WCFM Membership WordPress plugin: stored XSS through 2.12.0","impact":"medium","summary":"The WCFM Membership plugin for WooCommerce multivendor stores does not neutralize input before rendering it into pages, allowing stored cross-site scripting. An attacker who can store malicious content can run script in other users' browsers, including site staff.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","woocommerce","wcfm","wc-multivendor-membership"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Attacker script runs in staff or admin browsers, enabling session takeover.","analyst_note":"Confirm the fixed version and which user roles can store the payload, from the NVD entry or the plugin's changelog.","how_to_check":"- Check the installed version of the `wc-multivendor-membership` plugin in the WordPress admin under Plugins.\n- Confirm whether the WCFM Membership plugin is active on the site.","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed"],"who_is_affected":"Sites running the WCFM Membership add-on for WCFM / WooCommerce multivendor marketplaces at version 2.12.0 or earlier. Sites without this plugin installed are not affected.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000699,"input_tokens":4229,"output_tokens":553,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':10A,13A '-39744':11A,14A '2.12.0':8A,95C 'affect':89C 'allow':40B,85C 'attack':47B 'browser':59B 'content':52B 'cross':43B,72C 'cross-sit':42B,71C 'cve':9A,12A 'generat':70C 'improp':63C 'includ':60B 'input':34B,66C 'issu':88C 'lover':78C 'malici':51B 'membership':2A,19B,25B,80C,84C,91C 'multivendor':18B,29B,83C 'n/a':93C 'neutral':33B,64C 'packag':15B 'page':39B,69C 'plugin':4A,26B 'render':36B 'run':54B 'script':45B,55B,74C 'site':44B,61B,73C 'staff':62B 'store':5A,30B,41B,50B,86C 'user':58B 'vulner':75C 'wc':17B,77C,82C 'wc-multivendor-membership':16B,81C 'wcfm':1A,20B,24B,79C,90C 'web':68C 'woocommerc':21B,28B 'wordpress':3A,22B 'xss':6A 'xss.this':87C","nicknames":[],"mitigations":[],"who_affected":"Sites running the WCFM Membership add-on for WCFM / WooCommerce multivendor marketplaces at version 2.12.0 or earlier. Sites without this plugin installed are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","package","wcfm","wcmultivendormembership","woocommerce","wordpress"],"campaign_type":null,"search_a":"'-2026':10A,13A '-39744':11A,14A '2.12.0':8A 'cve':9A,12A 'membership':2A 'plugin':4A 'store':5A 'wcfm':1A 'wordpress':3A 'xss':6A","search_b":"'allow':40B 'attack':47B 'browser':59B 'content':52B 'cross':43B 'cross-sit':42B 'includ':60B 'input':34B 'malici':51B 'membership':19B,25B 'multivendor':18B,29B 'neutral':33B 'packag':15B 'page':39B 'plugin':26B 'render':36B 'run':54B 'script':45B,55B 'site':44B,61B 'staff':62B 'store':30B,41B,50B 'user':58B 'wc':17B 'wc-multivendor-membership':16B 'wcfm':20B,24B 'woocommerc':21B,28B 'wordpress':22B","search_c":"'2.12.0':95C 'affect':89C 'allow':85C 'cross':72C 'cross-sit':71C 'generat':70C 'improp':63C 'input':66C 'issu':88C 'lover':78C 'membership':80C,84C,91C 'multivendor':83C 'n/a':93C 'neutral':64C 'page':69C 'script':74C 'site':73C 'store':86C 'vulner':75C 'wc':77C,82C 'wc-multivendor-membership':81C 'wcfm':79C,90C 'web':68C 'xss.this':87C","first_public_at":"2026-11-06T08:17:25+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-39744","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39744","severity":null,"published_at":"2026-11-06T08:17:25+00:00","modified_at":"2026-11-06T08:17:25+00:00","first_seen_at":"2026-11-06T08:40:33+00:00","fetched_at":"2026-11-06T08:40:33+00:00","note":null}],"documents":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}