{"id":"CVE-2021-29047","details":"The SimpleCaptcha implementation in Liferay Portal 7.3.4, 7.3.5 and Liferay DXP 7.3 before fix pack 1 does not invalidate CAPTCHA answers after it is used, which allows remote attackers to repeatedly perform actions protected by a CAPTCHA challenge by reusing the same CAPTCHA answer.","aliases":["GHSA-9mxg-p873-6793"],"modified":"2026-09-05T03:30:57.805060034Z","published":"2021-05-16T16:15:07.297Z","database_specific":{"unresolved_ranges":[{"vendor_product":"liferay:dxp","cpes":["cpe:2.3:a:liferay:dxp:*:*:*:*:*:*:*:*"],"extracted_events":[{"fixed":"7.3"}],"source":"CPE_RANGE"},{"source":"CPE_STRING","vendor_product":"liferay:dxp","cpes":["cpe:2.3:a:liferay:dxp:7.3:-:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.3-NA"},{"last_affected":"7.3-NA"}]}]},"references":[{"type":"ADVISORY","url":"https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120743467"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/liferay/liferay-portal","events":[{"introduced":"6d28f4266948e7b0eeb14c3e8d16b3d81e02e8bb"},{"last_affected":"f193301b2848899b008d51513af62a3b3a9b7888"}],"database_specific":{"cpe":["cpe:2.3:a:liferay:liferay_portal:7.3.4:*:*:*:*:*:*:*","cpe:2.3:a:liferay:liferay_portal:7.3.5:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.3.4"},{"last_affected":"7.3.4"},{"introduced":"7.3.5"},{"last_affected":"7.3.5"}],"source":"CPE_STRING"}}],"versions":["7.3.4","7.3.5","7.3.5-ga6","7.3.4-ga5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29047.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}