{"id":"CVE-2026-124270","kind":"vulnerability","aliases":["CVE-2026-124270"],"related":[],"title":"NEX-Forms WordPress plugin: reflected XSS lets attackers run scripts in visitors' browsers","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Basix NEX-Forms nex-forms-express-wp-form-builder allows Reflected XSS.This issue affects NEX-Forms: from n/a through 9.3.3.","summary":"NEX-Forms, a WordPress form builder plugin by Basix, does not neutralize input in some pages, allowing reflected cross-site scripting. An attacker can get a logged-in user to open a crafted link and run script in their browser session.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["nex-forms","package","self-hosted","wordpress"],"not_affected_if":["plugin-not-installed"],"how_to_check":"- Check the installed NEX-Forms plugin version in the WordPress admin under Plugins\n- Look for the plugin folder `nex-forms-express-wp-form-builder` on the server\n- Versions through `9.3.3` are named as affected in the source","fix":"- NEX-Forms: unknown (sources name no fixed version)","status":"open","published_at":"2026-11-15T14:17:21+00:00","first_seen_at":"2026-11-15T14:36:14+00:00","triaged_at":"2026-11-15T14:37:35+00:00","updated_at":"2026-11-15T14:37:35+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-15T14:37:35Z","model":"claude-haiku-5-5","output":{"fix":"- NEX-Forms: unknown (sources name no fixed version)","reach":"internet","title":"NEX-Forms WordPress plugin: reflected XSS lets attackers run scripts in visitors' browsers","impact":"medium","summary":"NEX-Forms, a WordPress form builder plugin by Basix, does not neutralize input in some pages, allowing reflected cross-site scripting. An attacker can get a logged-in user to open a crafted link and run script in their browser session.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","nex-forms","self-hosted"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker runs scripts in a victim's browser on the site","analyst_note":"Find the fixed version and the affected endpoint in the NVD entry or the Wordfence/vendor advisory for NEX-Forms.","how_to_check":"- Check the installed NEX-Forms plugin version in the WordPress admin under Plugins\n- Look for the plugin folder `nex-forms-express-wp-form-builder` on the server\n- Versions through `9.3.3` are named as affected in the source","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["plugin-not-installed"],"who_is_affected":"Sites running the NEX-Forms WordPress plugin (nex-forms-express-wp-form-builder) at affected versions, through 9.3.3 per NVD. Exposure depends on the plugin's pages reflecting unescaped input; sites without the plugin are not affected. The sources do not say which pages or parameters are involved.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000759,"input_tokens":4553,"output_tokens":607,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-124270':17A,20A '-2026':16A,19A '9.3.3':109C 'affect':102C 'allow':46B,98C 'attack':9A,53B 'basix':38B,87C 'browser':14A,71B 'builder':35B,97C 'craft':64B 'cross':49B,82C 'cross-sit':48B,81C 'cve':15A,18A 'express':94C 'form':3A,23B,31B,34B,90C,93C,96C,105C 'generat':80C 'get':55B 'host':27B 'improp':73C 'input':42B,76C 'issu':101C 'let':8A 'link':65B 'log':58B 'logged-in':57B 'n/a':107C 'neutral':41B,74C 'nex':2A,22B,30B,89C,92C,104C 'nex-form':1A,21B,29B,88C,103C 'nex-forms-express-wp-form-build':91C 'open':62B 'packag':24B 'page':45B,79C 'plugin':5A,36B 'reflect':6A,47B,99C 'run':10A,67B 'script':11A,51B,68B,84C 'self':26B 'self-host':25B 'session':72B 'site':50B,83C 'user':60B 'visitor':13A 'vulner':85C 'web':78C 'wordpress':4A,28B,33B 'wp':95C 'xss':7A 'xss.this':100C","nicknames":[],"mitigations":[],"who_affected":"Sites running the NEX-Forms WordPress plugin (nex-forms-express-wp-form-builder) at affected versions, through 9.3.3 per NVD. Exposure depends on the plugin's pages reflecting unescaped input; sites without the plugin are not affected. The sources do not say which pages or parameters are involved.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","nexforms","package","selfhosted","wordpress"],"campaign_type":null,"search_a":"'-124270':17A,20A '-2026':16A,19A 'attack':9A 'browser':14A 'cve':15A,18A 'form':3A 'let':8A 'nex':2A 'nex-form':1A 'plugin':5A 'reflect':6A 'run':10A 'script':11A 'visitor':13A 'wordpress':4A 'xss':7A","search_b":"'allow':46B 'attack':53B 'basix':38B 'browser':71B 'builder':35B 'craft':64B 'cross':49B 'cross-sit':48B 'form':23B,31B,34B 'get':55B 'host':27B 'input':42B 'link':65B 'log':58B 'logged-in':57B 'neutral':41B 'nex':22B,30B 'nex-form':21B,29B 'open':62B 'packag':24B 'page':45B 'plugin':36B 'reflect':47B 'run':67B 'script':51B,68B 'self':26B 'self-host':25B 'session':72B 'site':50B 'user':60B 'wordpress':28B,33B","search_c":"'9.3.3':109C 'affect':102C 'allow':98C 'basix':87C 'builder':97C 'cross':82C 'cross-sit':81C 'express':94C 'form':90C,93C,96C,105C 'generat':80C 'improp':73C 'input':76C 'issu':101C 'n/a':107C 'neutral':74C 'nex':89C,92C,104C 'nex-form':88C,103C 'nex-forms-express-wp-form-build':91C 'page':79C 'reflect':99C 'script':84C 'site':83C 'vulner':85C 'web':78C 'wp':95C 'xss.this':100C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-15T14:17:21+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-2026-124270","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124270","severity":null,"published_at":"2026-11-15T14:17:21+00:00","modified_at":"2026-11-15T14:17:21+00:00","first_seen_at":"2026-11-15T14:36:14+00:00","fetched_at":"2026-11-15T14:36:14+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}