Drawing-Captcha APP Host Header Injection in `/register` and `/confirm-email` Endpoints

{
  "id": "8dd26afb84f0011ebfcc813a73da203830f18beac92a6e181aa3e7f28796b0c1",
  "url": "https://osv.dev/vulnerability/CVE-2025-62428",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Drawing-Captcha APP Host Header Injection in `/register` and `/confirm-email` Endpoints",
    "summary": "Drawing-Captcha APP provides interactive, engaging verification for Web-Based Applications. The vulnerability is a Host Header Injection in the /register and /confirm-email endpoints. It allows an attacker to manipulate the Host header in HTTP requests to generate malicious email confirmation links. These links can redirect users to attacker-controlled domains. This vulnerability affects all users relying on email confirmation for account registration or verification. This vulnerability is fixed in 1.2.5-alpha-patch.",
    "evidence": "osv:CVE-2025-62428",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-62428",
      "aliases": [
        "CVE-2025-62428",
        "GHSA-5pj8-fc6g-vv7m"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/drawing-captcha/drawing-captcha-app",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5dd435c489456ff52003a4c2eca836af09ae9dfe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.5-alpha-patch"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.2.5-alpha-patch"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.2.4-alpha-patch",
            "v1.2.3-alpha-patch",
            "v1.2.2-alpha-patch",
            "v1.2.1-alpha-patch",
            "v1.2.0-alpha",
            "v1.1.0-alpha",
            "published"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-62428.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.091358681Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62428.json",
        "https://github.com/Drawing-Captcha/Drawing-Captcha-APP/security/advisories/GHSA-5pj8-fc6g-vv7m",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-62428",
        "https://github.com/Drawing-Captcha/Drawing-Captcha-APP/issues/30"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-601"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62428.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-62428",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499964,
  "published_at": "2025-10-16T18:57:14.114+00:00"
}