Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint

{
  "id": "b75c4da7d2eb7f2218ba614dccded36f2687b62e8fb8725fae69c4619f2d1088",
  "url": "https://osv.dev/vulnerability/CVE-2026-56312",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint",
    "summary": "Capgo before 12.128.2 contains an improper validation vulnerability in the accept_invitation endpoint that creates user accounts before captcha validation is enforced. Attackers can bypass captcha protection by sending POST requests with invalid captcha tokens to create unwanted accounts and burn invite links.",
    "evidence": "osv:CVE-2026-56312",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-56312",
      "aliases": [
        "CVE-2026-56312",
        "GHSA-whc5-fvr7-g5v3"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/Cap-go/capgo.app",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6685e5f11adef257bf3d085e481f4d8ebcec602e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "12.128.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "12.128.2"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "capgo-12.128.1",
            "capgo-12.128.0",
            "capgo-12.127.23",
            "capgo-12.127.22",
            "cli-7.95.10",
            "capgo-12.127.21",
            "capgo-12.127.20",
            "capgo-12.127.19",
            "capgo-12.127.18",
            "capgo-12.127.17",
            "cli-7.95.9",
            "capgo-12.127.16",
            "capgo-12.127.15",
            "capgo-12.127.14",
            "cli-7.95.8",
            "capgo-12.127.13",
            "capgo-12.127.12",
            "cli-7.95.7",
            "capgo-12.127.11",
            "capgo-12.127.10",
            "capgo-12.127.9",
            "cli-7.95.6",
            "capgo-12.127.8",
            "capgo-12.127.5",
            "cli-7.95.5",
            "capgo-12.127.4",
            "cli-7.95.4",
            "capgo-12.127.3",
            "capgo-12.127.2",
            "cli-7.95.3",
            "capgo-12.127.1",
            "cli-7.95.2",
            "capgo-12.127.0",
            "cli-7.95.1",
            "capgo-12.126.2",
            "capgo-12.126.1",
            "cli-7.95.0",
            "capgo-12.126.0",
            "capgo-12.125.0",
            "cli-7.94.9",
            "capgo-12.124.9",
            "capgo-12.124.7",
            "cli-7.94.8",
            "cli-7.94.7",
            "capgo-12.124.6",
            "capgo-12.124.5",
            "cli-7.94.6",
            "capgo-12.124.4",
            "cli-7.94.5",
            "capgo-12.124.3",
            "capgo-12.124.1",
            "capgo-12.124.0",
            "capgo-12.123.9",
            "cli-7.94.1",
            "cli-7.94.0",
            "v12.123.8",
            "v12.123.7",
            "v12.123.6",
            "v12.123.5",
            "v12.123.4",
            "v12.123.3",
            "v12.123.2",
            "v12.123.1",
            "v12.123.0",
            "v12.122.16",
            "v12.122.15",
            "v12.122.14",
            "v12.122.13",
            "v12.122.12",
            "v12.122.11",
            "v12.122.10",
            "v12.122.9",
            "v12.122.8",
            "v12.122.7",
            "v12.122.6",
            "v12.122.5",
            "v12.122.4",
            "v12.122.3",
            "v12.122.2",
            "v12.122.1",
            "v12.122.0",
            "v12.121.11",
            "v12.121.10",
            "v12.121.9",
            "v12.121.8",
            "v12.121.7",
            "v12.121.6",
            "v12.121.5",
            "v12.121.4",
            "v12.121.2",
            "v12.121.1",
            "v12.121.0",
            "v12.120.20",
            "v12.120.19",
            "v12.120.16",
            "v12.120.15",
            "v12.120.14",
            "v12.120.13",
            "v12.120.12",
            "v12.120.11",
            "v12.120.10",
            "v12.120.9",
            "v12.120.8",
            "v12.120.7",
            "v12.120.6",
            "v12.120.5",
            "v12.120.4",
            "v12.119.21",
            "v12.119.20",
            "v12.119.19",
            "v12.119.18",
            "v12.119.17",
            "v12.119.16",
            "v12.119.15",
            "v12.119.14",
            "v12.119.13",
            "v12.119.12",
            "v12.119.10",
            "v12.119.9",
            "v12.119.8",
            "v12.119.6",
            "v12.119.5",
            "v12.119.4",
            "v12.119.3",
            "v12.119.0",
            "v12.118.2",
            "v12.118.1",
            "v12.118.0",
            "v12.117.8",
            "v12.117.6",
            "v12.117.5",
            "v12.117.4",
            "v12.117.3",
            "v12.117.2",
            "v12.117.1",
            "v12.116.72",
            "v12.116.71",
            "v12.116.70",
            "v12.116.69",
            "v12.116.68",
            "v12.116.67",
            "v12.116.66",
            "v12.116.65",
            "v12.116.64",
            "v12.116.63",
            "v12.116.62",
            "v12.116.61",
            "v12.116.60",
            "v12.116.59",
            "v12.116.58",
            "v12.116.57",
            "v12.116.56",
            "v12.116.55",
            "v12.116.54",
            "v12.116.53",
            "v12.116.52",
            "v12.116.51",
            "v12.116.50",
            "v12.116.49",
            "v12.116.48",
            "v12.116.47",
            "v12.116.46",
            "v12.116.45",
            "v12.116.41",
            "v12.116.40",
            "v12.116.39",
            "v12.116.34",
            "v12.116.33",
            "v12.116.30",
            "v12.116.29",
            "v12.116.28",
            "v12.116.27",
            "v12.116.24",
            "v12.116.23",
            "v12.116.22",
            "v12.116.21",
            "v12.116.20",
            "v12.116.19",
            "v12.116.18",
            "v12.116.17",
            "v12.116.16",
            "v12.116.15",
            "v12.116.14",
            "v12.116.13",
            "v12.116.12",
            "v12.116.11",
            "v12.116.10",
            "v12.116.9",
            "v12.116.8",
            "v12.116.7",
            "v12.116.6",
            "v12.116.5",
            "v12.116.4",
            "v12.116.3",
            "v12.116.2",
            "v12.116.1",
            "v12.116.0",
            "v12.115.2",
            "v12.115.0",
            "v12.114.12",
            "v12.114.9",
            "v12.114.7",
            "v12.114.6",
            "v12.114.4",
            "v12.114.2",
            "v12.114.1",
            "v12.114.0",
            "v12.113.2",
            "v12.113.1",
            "v12.113.0",
            "v12.112.6",
            "v12.112.5",
            "v12.112.4",
            "v12.112.3",
            "v12.112.2",
            "v12.112.1",
            "v12.112.0",
            "v12.111.3",
            "v12.111.2",
            "v12.111.1",
            "v12.110.6",
            "v12.110.5",
            "v12.110.4",
            "v12.110.3",
            "v12.110.2",
            "v12.110.0",
            "v12.109.17",
            "v12.109.15",
            "v12.109.14",
            "v12.109.13",
            "v12.109.12",
            "v12.109.11",
            "v12.109.10",
            "v12.109.9",
            "v12.109.8",
            "v12.109.7",
            "v12.109.6",
            "v12.109.5",
            "v12.109.4",
            "v12.109.3",
            "v12.109.2",
            "v12.109.1",
            "v12.109.0",
            "v12.108.19",
            "v12.108.18",
            "v12.108.17",
            "v12.108.16",
            "v12.108.15",
            "v12.108.14",
            "v12.108.13",
            "v12.108.12",
            "v12.108.11",
            "v12.108.10",
            "v12.108.9",
            "v12.108.8",
            "v12.108.7",
            "v12.108.6",
            "v12.108.5",
            "v12.108.4",
            "v12.108.3",
            "v12.108.2",
            "v12.108.1",
            "v12.108.0",
            "v12.107.26",
            "v12.107.24",
            "v12.107.22",
            "v12.107.21",
            "v12.107.20",
            "v12.107.19",
            "v12.107.11",
            "v12.107.10",
            "v12.107.8",
            "v12.107.7",
            "v12.107.6",
            "v12.107.5",
            "v12.107.4",
            "v12.107.3",
            "v12.107.2",
            "v12.107.1",
            "v12.107.0",
            "v12.106.2",
            "v12.106.1",
            "v12.106.0",
            "v12.105.9",
            "v12.105.8",
            "v12.105.6",
            "v12.105.5",
            "v12.105.4",
            "v12.105.3",
            "v12.105.0",
            "v12.104.3",
            "v12.104.2",
            "v12.103.1",
            "v12.102.6",
            "v12.102.4",
            "v12.102.3",
            "v12.102.2",
            "v12.102.1",
            "v12.102.0",
            "v12.101.1",
            "v12.101.0",
            "v12.100.15",
            "v12.100.14",
            "v12.100.13",
            "v12.100.12",
            "v12.100.11",
            "v12.100.10",
            "v12.100.9",
            "v12.100.8",
            "v12.100.7",
            "v12.100.6",
            "v12.100.5",
            "v12.100.4",
            "v12.100.3",
            "v12.100.1",
            "v12.100.0",
            "v12.99.1",
            "v12.99.0",
            "v12.98.3",
            "v12.98.2",
            "v12.98.1",
            "v12.97.1",
            "v12.97.0",
            "v12.96.2",
            "v12.96.1",
            "v12.96.0",
            "v12.95.0",
            "v12.94.6",
            "v12.94.2",
            "v12.94.1",
            "v12.94.0",
            "v12.93.6",
            "v12.93.5",
            "v12.93.4",
            "v12.93.3",
            "v12.93.2",
            "v12.93.1",
            "v12.93.0",
            "v12.92.0",
            "v12.91.15",
            "v12.91.14",
            "v12.91.12",
            "v12.91.10",
            "v12.91.9",
            "v12.91.8",
            "v12.91.7",
            "v12.91.6",
            "v12.91.5",
            "v12.91.4",
            "v12.91.3",
            "v12.91.2",
            "v12.91.1",
            "v12.91.0",
            "v12.90.3",
            "v12.90.2",
            "v12.90.1",
            "v12.90.0",
            "v12.89.17",
            "v12.89.16",
            "v12.89.15",
            "v12.89.14",
            "v12.89.12",
            "v12.89.9",
            "v12.89.6",
            "v12.89.5",
            "v12.87.1",
            "v12.86.2",
            "v12.86.0",
            "v12.85.9",
            "v12.85.8",
            "v12.85.7",
            "v12.85.4",
            "v12.85.3",
            "v12.85.2",
            "v12.85.1",
            "v12.85.0",
            "v12.84.6",
            "v12.84.5",
            "v12.73.2",
            "v12.56.26",
            "v12.56.25",
            "v12.56.24",
            "v12.56.18",
            "v12.56.16",
            "v12.56.15",
            "v12.56.14",
            "v12.56.13",
            "v12.56.12",
            "v12.56.11",
            "v12.56.10",
            "v12.56.9",
            "v12.56.8",
            "v12.56.7",
            "v12.56.6",
            "v12.56.4",
            "v12.56.2",
            "v12.56.1",
            "v12.56.0",
            "v12.55.9",
            "v12.55.8",
            "v12.55.5",
            "v12.55.4",
            "v12.55.3",
            "10.0.0",
            "1.66.4",
            "1.64.1",
            "1.62.4",
            "1.62.1",
            "1.62.0",
            "1.61.35",
            "1.61.34",
            "1.61.33",
            "1.61.27",
            "1.61.23",
            "1.61.21",
            "1.61.17",
            "1.61.15",
            "1.61.14",
            "1.61.12",
            "1.61.2",
            "1.60.4",
            "1.58.16",
            "1.58.15",
            "1.58.1",
            "1.55.44",
            "1.55.43",
            "1.55.42",
            "1.55.39",
            "1.55.38",
            "1.55.37",
            "1.55.35",
            "1.55.31",
            "1.55.23",
            "1.55.12",
            "1.55.9",
            "1.55.6",
            "1.55.5",
            "1.55.4",
            "1.55.3",
            "1.55.2",
            "1.55.0",
            "1.54.9",
            "1.54.6",
            "1.54.5",
            "1.54.4",
            "1.54.3",
            "1.54.2",
            "1.54.1",
            "1.54.0",
            "1.53.8",
            "1.53.7",
            "1.53.6",
            "1.53.5",
            "1.53.4",
            "1.53.3",
            "1.53.2",
            "1.53.1",
            "1.53.0",
            "1.52.3",
            "1.52.2",
            "1.52.1",
            "1.51.0",
            "1.50.3",
            "1.50.2",
            "1.50.1",
            "1.50.0",
            "1.48.1",
            "1.48.0",
            "1.47.3",
            "1.47.1",
            "1.47.0",
            "1.46.4",
            "1.46.0",
            "1.45.4",
            "1.45.3",
            "1.45.2",
            "1.45.1",
            "1.45.0",
            "1.44.26",
            "1.44.21",
            "1.44.19",
            "1.44.16",
            "1.44.15",
            "1.44.12",
            "1.44.11",
            "1.44.1",
            "1.43.1",
            "1.39.0",
            "1.37.31",
            "1.37.22",
            "1.37.15",
            "1.37.5",
            "1.36.49",
            "1.36.41",
            "1.36.25",
            "1.36.24",
            "1.36.22",
            "1.36.15",
            "1.36.12",
            "1.36.8",
            "1.36.7",
            "1.36.4",
            "1.35.1",
            "1.35.0",
            "1.34.0",
            "1.33.3",
            "1.31.4",
            "1.31.3",
            "1.31.1",
            "1.28.3",
            "1.27.6",
            "1.27.3",
            "1.27.2",
            "1.27.1",
            "1.27.0",
            "1.26.2",
            "1.26.1",
            "1.25.14",
            "1.25.7",
            "1.25.6",
            "1.25.2",
            "1.24.18",
            "1.24.17",
            "1.24.16",
            "1.24.10",
            "1.24.3",
            "1.24.2",
            "1.24.1",
            "1.24.0",
            "1.23.1",
            "1.23.0",
            "1.22.2",
            "1.22.1",
            "1.21.25",
            "1.21.23",
            "1.21.19",
            "1.21.11",
            "1.21.10",
            "1.21.9",
            "1.21.8",
            "1.21.7",
            "1.21.6",
            "1.21.0",
            "1.20.3",
            "1.20.2",
            "1.20.1",
            "1.20.0",
            "1.19.5",
            "1.19.4",
            "1.19.3",
            "1.18.36",
            "1.18.33",
            "1.18.28",
            "1.18.26",
            "1.18.24",
            "1.18.16",
            "1.18.10",
            "1.18.9",
            "1.18.8",
            "1.18.5",
            "1.18.4",
            "1.18.2",
            "1.18.1",
            "1.18.0",
            "1.17.0",
            "1.17.0-alpha.1",
            "1.17.0-alpha.0",
            "1.16.3-alpha.0",
            "1.16.1-alpha.0",
            "1.16.0-alpha.0",
            "1.14.6",
            "1.14.4",
            "1.13.13",
            "1.13.12",
            "1.13.11",
            "1.13.5",
            "1.13.4",
            "1.13.3",
            "1.12.1",
            "1.11.1",
            "1.11.0",
            "1.10.2",
            "1.10.1",
            "1.10.0",
            "1.9.10",
            "1.9.9",
            "1.9.7",
            "1.9.6",
            "1.9.1",
            "1.9.0-alpha.0",
            "1.8.7-alpha.2",
            "1.8.7-alpha.1",
            "1.8.7-alpha.0",
            "1.8.6",
            "1.8.3",
            "1.8.1",
            "1.7.28",
            "1.7.27",
            "1.7.24",
            "1.7.15",
            "1.7.10",
            "1.6.11",
            "1.6.7",
            "0.30.19",
            "0.30.12",
            "0.30.12-alpha.1",
            "0.30.9-alpha.16",
            "0.30.9-alpha.15",
            "0.30.9-alpha.10",
            "0.30.9-alpha.9",
            "0.30.9-alpha.6",
            "0.30.9-alpha.3",
            "0.30.9-alpha.0",
            "0.30.8-alpha.4",
            "0.30.8-alpha.1",
            "0.30.8-alpha.0",
            "0.30.6-alpha.2",
            "0.30.6-alpha.0",
            "0.30.5-alpha.4",
            "0.30.2",
            "0.29.5",
            "0.29.1",
            "0.26.1",
            "0.26.0",
            "0.24.1",
            "0.23.0",
            "0.20.2",
            "0.20.1",
            "0.19.0",
            "0.18.2",
            "0.16.3",
            "0.16.1",
            "0.16.0",
            "0.15.1",
            "0.14.6",
            "0.14.5",
            "0.14.2",
            "0.14.0",
            "0.11.0",
            "0.6.1",
            "0.3.1",
            "0.1.8",
            "0.1.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56312.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.811551308Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56312.json",
        "https://github.com/Cap-go/capgo/security/advisories/GHSA-whc5-fvr7-g5v3",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56312",
        "https://www.vulncheck.com/advisories/capgo-account-creation-before-captcha-validation-in-accept-invitation-endpoint"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-287"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56312.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-56312",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507313,
  "published_at": "2026-07-10T13:57:55.606+00:00"
}