{"schema":"threatline.record/2","record":{"id":"CVE-2026-101335","aliases":[],"summary":"Forminator Forms <= 1.58.1 - Unauthenticated Arbitrary Shortcode Execution via 'User-Agent' Header and 'referer_url' Parameter via Quiz Notification Merge Tags","details":"The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions up to, and including, 1.58.1. This is due to the forminator_replace_quiz_form_data() helper invoking do_shortcode() on the fully expanded notification body once the {quiz_result} merge tag has been substituted, while the earlier-substituted {user_agent} and {refer_url} merge tags carry unauthenticated attacker-controlled bytes (the User-Agent header and the referer_url POST parameter) through sanitize_text_field()/esc_html(), neither of which strip the '[' and ']' shortcode delimiters. This makes it possible for unauthenticated attackers to execute arbitrary WordPress shortcodes registered on the site by submitting a quiz whose notification template contains {quiz_result}; the resulting impact depends on the shortcodes exposed by other installed plugins/themes and can range from arbitrary content injection to information disclosure.","categories":["Unclassified"],"product":"Forminator Forms – Contact Form, Payment Form & Custom Form Builder","vendor":"wpmudev","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-101335","source_modified_at":"2026-10-16T15:09:40.456Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Forminator Forms – Contact Form, Payment Form & Custom Form Builder","vendor":"wpmudev","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.58.1","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.0028,"percentile":0.19428,"score_date":"2026-10-23"},"published_at":"2026-10-16T04:26:58.967Z","modified_at":"2026-10-16T15:09:40.456Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-101335","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T15:09:40.456Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-101335","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/27640d44-1474-416a-8efd-e9524f9d3c7f?source=cve"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/library/helpers/helper-fields.php#L2965"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/library/helpers/helper-fields.php#L1652"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/library/helpers/helper-fields.php#L1476"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/library/modules/quizzes/front/front-mail.php#L36"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.57.3/library/abstracts/abstract-class-front-action.php#L127"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3745883%40forminator&new=3745883%40forminator"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-16T14:51:26.987078Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T15:09:40.456Z","content_hash":"1b6b5eeda529b235040b74079bac98dc3a7117198d55909d9c2d35a2d90614a3"}}