{"schema":"threatline.record/2","record":{"id":"CVE-2026-100306","aliases":[],"summary":"TDuck survey form through 6.0 Write Password Bypass via Client-Side Enforcement","details":"TDuck survey form through 6.0 fails to validate write passwords on submission endpoints, enforcing the check only on the front end. Remote unauthenticated attackers can submit form entries directly to public submission APIs without providing the password by using the form key from share links.","categories":["Unclassified"],"product":"tduck-survey-form","vendor":"TDuckCloud","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100306","source_modified_at":"2026-09-30T17:29:31.975Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"tduck-survey-form","vendor":"TDuckCloud","versions":[{"version":"0","lessThanOrEqual":"6.0","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00388,"percentile":0.31712,"score_date":"2026-10-23"},"published_at":"2026-09-25T18:47:40.936Z","modified_at":"2026-09-30T17:29:31.975Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100306","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-30T17:29:31.975Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100306","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/LinYuanyi1/cve-request-poc/blob/adffc39b78cad18cd489cbf7454853bf0f744b7f/tduck/poc_form_data_create_bypass.py","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/TDuckCloud/tduck-survey-form","tags":["product"]},{"source":"CVE List","url":"https://github.com/TDuckCloud/tduck-survey-form/blob/43ffa9c993e38936fc4de7d8e5aee82bbaa19502/tduck-api/src/main/java/com/tduck/cloud/api/web/controller/UserFormSettingController.java#L154-L162","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/TDuckCloud/tduck-survey-form/blob/43ffa9c993e38936fc4de7d8e5aee82bbaa19502/tduck-api/src/main/java/com/tduck/cloud/api/web/controller/UserFormResultController.java#L152-L172","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/tduck-survey-form-through-6.0-write-password-bypass-via-client-side-enforcement","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-30T15:49:37.610416Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-30T17:29:31.975Z","content_hash":"6be52e155976090aebf6871f329b6cce7cf5bc8c88a6976cba93e2c8fe4ab17d"}}