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CVE-2026-30913

Estado: AplazadaMedia (4.6)—

Flarum is open-source forum software. When the flarum/nicknames extension is enabled, a registered user can set their nickname to a string that email clients interpret as a hyperlink. The nickname is inserted verbatim into plain-text notification emails, and recipients may be misled into visiting attacker-controlled domains.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Flarum — NicknamesAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-30913",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-30913",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-10T14:17:25.125303Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.6,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "flarum",
          "product": "nicknames",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.8.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-10T17:40:15.210",
  "references": [
    {
      "url": "https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/flarum/nicknames/commit/4dde99729abdce8f6e2a7437c86e38735fdcca28",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/flarum/nicknames/releases/tag/v1.8.",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/flarum/framework/security/advisories/GHSA-3c4m-j3g4-hh25",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Flarum is open-source forum software. When the flarum/nicknames extension is enabled, a registered user can set their nickname to a string that email clients interpret as a hyperlink. The nickname is inserted verbatim into plain-text notification emails, and recipients may be misled into visiting attacker-controlled domains."
    },
    {
      "lang": "es",
      "value": "Flarum es un software de foro de código abierto. Cuando la extensión flarum/nicknames está habilitada, un usuario registrado puede establecer su apodo a una cadena que los clientes de correo electrónico interpretan como un hipervínculo. El apodo se inserta textualmente en los correos electrónicos de notificación de texto sin formato, y los destinatarios pueden ser engañados para que visiten dominios controlados por el atacante."
    }
  ],
  "lastModified": "2026-06-17T10:33:08.410",
  "sourceIdentifier": "security-advisories@github.com"
}