CVE-2026-40928

{
  "id": "CVE-2026-40928",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-21T23:16:20.300",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WWBN AVideo is an open source video platform. In versions 29.0 and prior, multiple AVideo JSON endpoints under `objects/` accept state-changing requests via `$_REQUEST`/`$_GET` and persist changes tied to the caller's session user, without any anti-CSRF token, origin check, or referer check. A malicious page visited by a logged-in victim can silently cast/flip the victim's like/dislike on any comment (`objects/comments_like.json.php`), post a comment authored by the victim on any video, with attacker-chosen text (`objects/commentAddNew.json.php`), and/or delete assets from any category (`objects/categoryDeleteAssets.json.php`) when the victim has category management rights. Each endpoint is reachable from a browser via a simple `<img src=\"…\">` tag or form submission, so exploitation only requires the victim to load an attacker-controlled HTML resource. Commit 7aaad601bd9cd7b993ba0ee1b1bea6c32ee7b77c contains a fix."
    },
    {
      "lang": "es",
      "value": "WWBN AVideo es una plataforma de video de código abierto. En las versiones 29.0 y anteriores, múltiples endpoints JSON de AVideo bajo “objects/” aceptan solicitudes que cambian el estado a través de “$_REQUEST”/“$_GET” y persisten los cambios vinculados al usuario de la sesión del llamante, sin ningún token anti-CSRF, verificación de origen o verificación de referer. Una página maliciosa visitada por una víctima que ha iniciado sesión puede silenciosamente emitir/cambiar el ’me gusta’/’no me gusta’ de la víctima en cualquier comentario (“objects/comments_like.json.php”), publicar un comentario escrito por la víctima en cualquier video, con texto elegido por el atacante (“objects/commentAddNew.json.php”), y/o eliminar activos de cualquier categoría (“objects/categoryDeleteAssets.json.php”) cuando la víctima tiene derechos de gestión de categorías. Cada endpoint es accesible desde un navegador a través de una simple etiqueta “<img src=“...”>” o envío de formulario, por lo que la explotación solo requiere que la víctima cargue un recurso HTML controlado por el atacante. El commit 7aaad601bd9cd7b993ba0ee1b1bea6c32ee7b77c contiene una corrección."
    }
  ],
  "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:N/I:L/A:L",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-22T13:15:40.914548Z",
          "id": "CVE-2026-40928",
          "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-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/7aaad601bd9cd7b993ba0ee1b1bea6c32ee7b77c",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-x2pw-9c38-cp2j",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-x2pw-9c38-cp2j",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}