{"id":"CVE-2026-121768","kind":"vulnerability","aliases":["CVE-2026-121768"],"related":[],"title":"Contact Form 7 Post Fields plugin: stored XSS through version 2.6.0","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Markus Wiesenhofer Contact Form 7 – Post Fields cf7-post-fields allows Stored XSS.This issue affects Contact Form 7 – Post Fields: from n/a through 2.6.0.","summary":"The Contact Form 7 Post Fields WordPress plugin (cf7-post-fields) fails to neutralize input when generating web pages, enabling stored cross-site scripting. An attacker can plant script that runs in the browser of other visitors or site administrators.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cf7-post-fields","contact-form-7","runtime","wordpress"],"not_affected_if":["plugin-not-installed"],"how_to_check":"- Check the installed version of the Contact Form 7 – Post Fields plugin (cf7-post-fields) in the WordPress admin plugin list, or with `wp plugin get cf7-post-fields --field=version`\n- Confirm whether the installed version is `2.6.0` or earlier","fix":null,"status":"open","published_at":"2026-11-07T09:17:13+00:00","first_seen_at":"2026-11-07T09:46:24+00:00","triaged_at":"2026-11-07T09:47:51+00:00","updated_at":"2026-11-07T09:47:51+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-07T09:47:51Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"Contact Form 7 Post Fields plugin: stored XSS through version 2.6.0","impact":"medium","summary":"The Contact Form 7 Post Fields WordPress plugin (cf7-post-fields) fails to neutralize input when generating web pages, enabling stored cross-site scripting. An attacker can plant script that runs in the browser of other visitors or site administrators.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["wordpress","contact-form-7","cf7-post-fields"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"attacker script runs in other visitors' browsers","analyst_note":"Check the plugin's changelog or the WordPress.org plugin page for the first fixed version and whether authentication or form input is required.","how_to_check":"- Check the installed version of the Contact Form 7 – Post Fields plugin (cf7-post-fields) in the WordPress admin plugin list, or with `wp plugin get cf7-post-fields --field=version`\n- Confirm whether the installed version is `2.6.0` or earlier\n- unknown whether the sources name a patched version","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed"],"who_is_affected":"Sites running the Contact Form 7 – Post Fields plugin at version 2.6.0 or earlier are affected, per the NVD description (all versions from n/a through 2.6.0). The flaw is stored, so exposure depends on whether untrusted users can submit data the plugin later displays. Sites that do not use the plugin can skip it.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000733,"input_tokens":4248,"output_tokens":616,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-121768':14A,17A '-2026':13A,16A '2.6.0':11A,108C '7':3A,25B,31B,88C,102C 'administr':69B 'affect':99C 'allow':95C 'attack':55B 'browser':63B 'cf7':19B,37B,92C 'cf7-post-fields':18B,36B,91C 'contact':1A,23B,29B,86C,100C 'contact-form':22B 'cross':51B,79C 'cross-sit':50B,78C 'cve':12A,15A 'enabl':48B 'fail':40B 'field':5A,21B,33B,39B,90C,94C,104C 'form':2A,24B,30B,87C,101C 'generat':45B,77C 'improp':70C 'input':43B,73C 'issu':98C 'markus':84C 'n/a':106C 'neutral':42B,71C 'page':47B,76C 'plant':57B 'plugin':6A,35B 'post':4A,20B,32B,38B,89C,93C,103C 'run':60B 'runtim':26B 'script':53B,58B,81C 'site':52B,68B,80C 'store':7A,49B,96C 'version':10A 'visitor':66B 'vulner':82C 'web':46B,75C 'wiesenhof':85C 'wordpress':27B,34B 'xss':8A 'xss.this':97C","nicknames":[],"mitigations":[],"who_affected":"Sites running the Contact Form 7 – Post Fields plugin at version 2.6.0 or earlier are affected, per the NVD description (all versions from n/a through 2.6.0). The flaw is stored, so exposure depends on whether untrusted users can submit data the plugin later displays. Sites that do not use the plugin can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["cf7postfields","contactform7","medium","runtime","wordpress"],"campaign_type":null,"search_a":"'-121768':14A,17A '-2026':13A,16A '2.6.0':11A '7':3A 'contact':1A 'cve':12A,15A 'field':5A 'form':2A 'plugin':6A 'post':4A 'store':7A 'version':10A 'xss':8A","search_b":"'7':25B,31B 'administr':69B 'attack':55B 'browser':63B 'cf7':19B,37B 'cf7-post-fields':18B,36B 'contact':23B,29B 'contact-form':22B 'cross':51B 'cross-sit':50B 'enabl':48B 'fail':40B 'field':21B,33B,39B 'form':24B,30B 'generat':45B 'input':43B 'neutral':42B 'page':47B 'plant':57B 'plugin':35B 'post':20B,32B,38B 'run':60B 'runtim':26B 'script':53B,58B 'site':52B,68B 'store':49B 'visitor':66B 'web':46B 'wordpress':27B,34B","search_c":"'2.6.0':108C '7':88C,102C 'affect':99C 'allow':95C 'cf7':92C 'cf7-post-fields':91C 'contact':86C,100C 'cross':79C 'cross-sit':78C 'field':90C,94C,104C 'form':87C,101C 'generat':77C 'improp':70C 'input':73C 'issu':98C 'markus':84C 'n/a':106C 'neutral':71C 'page':76C 'post':89C,93C,103C 'script':81C 'site':80C 'store':96C 'vulner':82C 'web':75C 'wiesenhof':85C 'xss.this':97C","first_public_at":"2026-11-07T09:17:13+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121768","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121768","severity":null,"published_at":"2026-11-07T09:17:13+00:00","modified_at":"2026-11-07T09:17:14+00:00","first_seen_at":"2026-11-07T09:46:24+00:00","fetched_at":"2026-11-07T09:46:24+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"}