CVE-2026-43883

{
  "id": "CVE-2026-43883",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-11T22:22:12.940",
  "lastModified": "2026-10-26T18:10:00.173",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the victim's recurring subscription, causing revenue loss to the platform and loss of paid service to the victim. Commit 0da3dcff1eda2f497694bf82b559829471c292c2 contains an updated fix."
    },
    {
      "lang": "es",
      "value": "WWBN AVideo es una plataforma de video de código abierto. En versiones hasta la 29.0 inclusive, plugin/PayPalYPT/agreementCancel.json.php cancela un acuerdo de facturación de PayPal utilizando un parámetro de acuerdo proporcionado por el atacante sin verificar que el usuario autenticado sea el propietario del acuerdo. Un usuario autenticado de bajo privilegio que conoce u obtiene el ID de acuerdo de facturación de PayPal de otro usuario puede suspender silenciosamente la suscripción recurrente de la víctima, causando pérdida de ingresos a la plataforma y pérdida de servicio pagado para la víctima. El commit 0da3dcff1eda2f497694bf82b559829471c292c2 contiene una corrección actualizada."
    }
  ],
  "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:H/PR:L/UI:N/S:U/C:N/I:L/A:L",
          "baseScore": 4.2,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 2.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-12T16:38:14.161173Z",
          "id": "CVE-2026-43883",
          "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-639"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/WWBN/AVideo/commit/0da3dcff1eda2f497694bf82b559829471c292c2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-958h-qp3x-q4gj",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-958h-qp3x-q4gj",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}