Security advisory

{
  "id": "5bd03174594226ce4fb7dc6f904632edd99b342839bd63a4bf53e2108af93262",
  "url": "https://osv.dev/vulnerability/CVE-2021-29047",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-29047",
    "summary": "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.",
    "evidence": "osv:CVE-2021-29047",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-29047",
      "aliases": [
        "CVE-2021-29047",
        "GHSA-9mxg-p873-6793"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/liferay/liferay-portal",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6d28f4266948e7b0eeb14c3e8d16b3d81e02e8bb"
                },
                {
                  "last_affected": "f193301b2848899b008d51513af62a3b3a9b7888"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:liferay:liferay_portal:7.3.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.3.4"
                      },
                      {
                        "last_affected": "7.3.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:liferay:liferay_portal:7.3.5:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "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"
          }
        }
      ],
      "modified": "2026-10-24T10:30:25.889382353Z",
      "provider": "osv",
      "references": [
        "https://portal.liferay.dev/learn/security/known-vulnerabilities/-/asset_publisher/HbL5mxmVrnXW/content/id/120743467"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:liferay:dxp:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "liferay:dxp",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "7.3"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:liferay:dxp:7.3:-:*:*:*:*:*:*"
            ],
            "vendor_product": "liferay:dxp",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "7.3-NA"
                  },
                  {
                    "last_affected": "7.3-NA"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-29047",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431477,
  "published_at": "2021-05-16T16:15:07.297+00:00"
}