CVE-2026-40925

{
  "id": "CVE-2026-40925",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-21T21:16:45.903",
  "lastModified": "2026-10-26T00:10:00.150",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/configurationUpdate.json.php` (also routed via `/updateConfig`) persists dozens of global site settings from `$_POST` but protects the endpoint only with `User::isAdmin()`. It does not call `forbidIfIsUntrustedRequest()`, does not verify a `globalToken`, and does not validate the Origin/Referer header. Because AVideo intentionally sets `session.cookie_samesite=None` to support cross-origin iframe embedding, a logged-in administrator who visits an attacker-controlled page will have the browser auto-submit a cross-origin POST that rewrites the site's encoder URL, SMTP credentials, site `<head>` HTML, logo, favicon, contact email, and more in a single request. Commit f9492f5e6123dff0292d5bb3164fde7665dc36b4 contains a fix."
    },
    {
      "lang": "es",
      "value": "WWBN AVideo es una plataforma de video de código abierto. En las versiones 29.0 y anteriores, “objects/configurationUpdate.json.php” (también enrutado a través de “/updateConfig”) persiste docenas de configuraciones globales del sitio desde “$_POST” pero protege el endpoint solo con “User::isAdmin()”. No llama a “forbidIfIsUntrustedRequest()”, no verifica un “globalToken”, y no valida el encabezado Origin/Referer. Debido a que AVideo establece intencionalmente “session.cookie_samesite=None” para admitir la incrustación de iframe de origen cruzado, un administrador con sesión iniciada que visita una página controlada por un atacante hará que el navegador envíe automáticamente un POST de origen cruzado que reescribe la URL del codificador del sitio, las credenciales SMTP, el HTML “[head]” del sitio, el logotipo, el favicon, el correo electrónico de contacto y más en una sola solicitud. El commit f9492f5e6123dff0292d5bb3164fde7665dc36b5 contiene una solución."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "WWBN",
          "product": "AVideo",
          "versions": [
            {
              "version": "<= 29.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L",
          "baseScore": 8.3,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-21T20:34:52.189663Z",
          "id": "CVE-2026-40925",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "29.0",
              "matchCriteriaId": "AC38CA07-71C1-4C86-B84A-83CF96367CBA"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/WWBN/AVideo/commit/f9492f5e6123dff0292d5bb3164fde7665dc36b4",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-vvfw-4m39-fjqf",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}