{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "6.0"
              },
              {
                "fixed": "6.5"
              },
              {
                "last_affected": "6.4.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "a66d859aecb427faad6adfce144fd97fbeb26a13"
            },
            {
              "fixed": "7a17e01c28eeb7af2c43384eccf5d859e3061371"
            }
          ],
          "repo": "https://github.com/pi-hole/web",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-7xqw-r9pr-qv59"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33403.json"
  },
  "details": "Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking application. From 6.0 to before 6.5, a reflected DOM-based XSS vulnerability in taillog.js allows an unauthenticated attacker to inject arbitrary HTML into the Pi-hole admin interface by crafting a malicious URL. The file query parameter is interpolated into an innerHTML assignment without escaping. Because the Content-Security-Policy is missing the form-action directive, injected \u003cform\u003e elements can exfiltrate credentials to an external origin. This vulnerability is fixed in 6.5.",
  "id": "CVE-2026-33403",
  "modified": "2026-08-12T03:51:10.485512749Z",
  "published": "2026-04-06T14:48:05.132Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33403.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pi-hole/web/security/advisories/GHSA-7xqw-r9pr-qv59"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33403"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Pi-hole has a Reflected XSS / HTML injection in taillog.js"
}