{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:pgadmin:pgadmin_4:*:*:*:*:*:postgresql:*:*",
            "extracted_events": [
              {
                "introduced": "6.0"
              },
              {
                "fixed": "9.16"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "a92bad7909458664e3f1c2fef582d2e7dbcc8da2"
            },
            {
              "fixed": "888a053231923e6704b56165cf248db056252144"
            },
            {
              "fixed": "fff6a481854b07822c2b54e8181e6a9076d204cd"
            }
          ],
          "repo": "https://github.com/pgadmin-org/pgadmin4",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "PostgreSQL",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12049.json"
  },
  "details": "Open redirect in pgAdmin 4's multi-factor authentication flow. The MFA validate and register endpoints honoured the user-supplied 'next' query/form parameter without confirming the target pointed back inside pgAdmin, so an authenticated victim who clicked /mfa/validate?next=\u003cexternal\u003e -- a link typically delivered by phishing -- would be sent to an attacker-controlled host directly out of the trusted auth flow.\n\nThe defect is a trusted-domain redirect, not a privilege bypass: the attacker gains no read/write access to pgAdmin or the victim's database, but the redirect launders the attacker's destination through pgAdmin's URL, which raises the success rate of credential-phishing follow-on against the victim.\n\nFix introduces a same-origin _is_safe_redirect_url helper and gates every MFA redirect that consumes user-supplied 'next' values through it. The helper allows only relative paths and absolute URLs whose scheme is http(s) and whose host matches the current request host; it rejects external hosts in absolute and protocol-relative form, non-http schemes (javascript:, data:, mailto:), userinfo tricks (http://localhost@attacker/), and backslash variants that some browsers normalize to forward slashes. Unsafe targets fall back to the internal browser index. A dedicated regression test exercises each accept/reject category and the original reporter PoC.\n\nThis issue affects pgAdmin 4: from 6.0 before 9.16.",
  "id": "CVE-2026-12049",
  "modified": "2026-07-08T05:38:34.892899279Z",
  "published": "2026-06-18T23:37:43.328Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12049.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12049"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pgadmin-org/pgadmin4/issues/10028"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pgadmin-org/pgadmin4/commit/fff6a481854b07822c2b54e8181e6a9076d204cd"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pgadmin-org/pgadmin4"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pgAdmin 4: Open redirect in multi-factor authentication flow via unvalidated 'next' parameter"
}