CVE-2026-35491

{
  "id": "CVE-2026-35491",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-07T16:16:27.467",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, Pi-hole FTL supports a CLI password feature (webserver.api.cli_pw) that creates “CLI” API sessions intended to be read-only for configuration changes. While /api/config correctly blocks CLI sessions from mutating configuration, /api/teleporter allowed Teleporter imports for CLI sessions, enabling a CLI-scoped session to overwrite configuration via a Teleporter archive (authorization bypass). This vulnerability is fixed in 6.6."
    },
    {
      "lang": "es",
      "value": "FTLDNS (pihole-FTL) proporciona una API interactiva y también genera estadísticas para la interfaz web de Pi-hole. Desde la 6.0 hasta antes de la 6.6, Pi-hole FTL soporta una característica de contraseña CLI (webserver.api.cli_pw) que crea sesiones de API ’CLI’ destinadas a ser de solo lectura para cambios de configuración. Mientras que /api/config bloquea correctamente las sesiones CLI de mutar la configuración, /api/teleporter permitía importaciones de Teleporter para sesiones CLI, permitiendo que una sesión con ámbito CLI sobrescribiera la configuración a través de un archivo de Teleporter (omisión de autorización). Esta vulnerabilidad está corregida en la 6.6."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "pi-hole",
          "product": "FTL",
          "versions": [
            {
              "version": ">= 6.0, < 6.6",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-07T17:52:41.306420Z",
          "id": "CVE-2026-35491",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:pi-hole:ftldns:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.0",
              "versionEndExcluding": "6.6",
              "matchCriteriaId": "B6C2E10B-7CA2-4E8D-A474-B7980BF3FC2C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/pi-hole/FTL/security/advisories/GHSA-r7g8-3fj7-m5qq",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}