« Volver al listado

CVE-2026-39344

Estado: AnalizadaAlta (8.1)—

ChurchCRM is an open-source church management system. Prior to 7.1.0, there is a Reflected Cross-Site Scripting (XSS) vulnerability on the login page, which is caused by the lack of sanitization or encoding of the username parameter received from the URL. The username parameter value is directly displayed in the login page input element without filter, allowing attackers to insert malicious JavaScript scripts. If successful, script can be executed on the client side, potentially stealing sensitive data such as session cookies or replacing the display to show the attacker's login form. This vulnerability is fixed in 7.1.0.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

XSS reflejado en parámetro username sin sanitización (CWE-79); ejecución de JavaScript en navegador del cliente (UI:R, AV:N); riesgo de robo de cookies/sesión confirmado en descripción.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict Web-Based ContentUser TrainingUpdate SoftwareMulti-factor AuthenticationExecution PreventionBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Churchcrm — Churchcrm

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-39344",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-39344",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-08T18:45:11.734700Z"
        }
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "ChurchCRM",
          "product": "CRM",
          "versions": [
            {
              "status": "affected",
              "version": "< 7.1.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-04-07T18:16:46.587",
  "references": [
    {
      "url": "https://github.com/ChurchCRM/CRM/security/advisories/GHSA-rx8c-j7x8-w3hj",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ChurchCRM/CRM/security/advisories/GHSA-rx8c-j7x8-w3hj",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-80"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ChurchCRM is an open-source church management system. Prior to 7.1.0, there is a Reflected Cross-Site Scripting (XSS) vulnerability on the login page, which is caused by the lack of sanitization or encoding of the username parameter received from the URL. The username parameter value is directly displayed in the login page input element without filter, allowing attackers to insert malicious JavaScript scripts. If successful, script can be executed on the client side, potentially stealing sensitive data such as session cookies or replacing the display to show the attacker's login form. This vulnerability is fixed in 7.1.0."
    },
    {
      "lang": "es",
      "value": "ChurchCRM es un sistema de gestión de iglesias de código abierto. Antes de la versión 7.1.0, existe una vulnerabilidad de cross-site scripting (XSS) reflejado en la página de inicio de sesión, la cual es causada por la falta de saneamiento o codificación del parámetro 'username' recibido de la URL. El valor del parámetro 'username' se muestra directamente en el elemento de entrada de la página de inicio de sesión sin filtro, permitiendo a los atacantes insertar scripts JavaScript maliciosos. Si tiene éxito, el script puede ser ejecutado en el lado del cliente, potencialmente robando datos sensibles como cookies de sesión o reemplazando la visualización para mostrar el formulario de inicio de sesión del atacante. Esta vulnerabilidad se corrigió en la versión 7.1.0."
    }
  ],
  "lastModified": "2026-07-24T21:10:00.143",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:churchcrm:churchcrm:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BF846F61-0C1E-49AB-B691-A01937A6C24D",
              "versionEndExcluding": "7.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}