{"id":"CVE-2026-100306","title":"TDuck survey form through 6.0 fails to validate write passwords on submission endpoints, enforcing the check only on the front end","summary":"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 provi…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-602"],"vendor":"TDuckCloud","product":"tduck-survey-form","affected":["tduck-survey-form <= 6.0"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T19:16:51.167","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100306","references":[{"url":"https://github.com/LinYuanyi1/cve-request-poc/blob/adffc39b78cad18cd489cbf7454853bf0f744b7f/tduck/poc_form_data_create_bypass.py","label":"disclosure@vulncheck.com"},{"url":"https://github.com/TDuckCloud/tduck-survey-form","label":"disclosure@vulncheck.com"},{"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","label":"disclosure@vulncheck.com"},{"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","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/tduck-survey-form-through-6.0-write-password-bypass-via-client-side-enforcement","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T19:15:38.964Z","slug":"CVE-2026-100306","body":"## Overview\n\nTDuck 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}