FKIE_CVE-2025-4126

Vulnerability from fkie_nvd - Published: 2025-05-15 04:16 - Updated: 2026-06-17 09:32
Severity
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Summary
The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/eg-series/trunk/lib/eg-plugin.inc.php#L546
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/ab518a1b-304d-4b93-b807-65ef3941dd47?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "EG-Series",
          "vendor": "emmanuelg",
          "versions": [
            {
              "lessThanOrEqual": "2.1.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin\u0027s [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page."
    },
    {
      "lang": "es",
      "value": "El complemento EG-Series para WordPress es vulnerable a Cross-Site Scripting almacenado a trav\u00e9s del shortcode [series] en todas las versiones hasta la 2.1.1 incluida, debido a una depuraci\u00f3n de entrada insuficiente y al escape de salida en los atributos proporcionados por el usuario en la funci\u00f3n shortcode_title. Esto permite a atacantes autenticados (con acceso de colaborador o superior, en sitios con el complemento Classic Editor activado) inyectar c\u00f3digo JavaScript arbitrario en el atributo titletag, que se ejecutar\u00e1 cada vez que un usuario acceda a una p\u00e1gina inyectada."
    }
  ],
  "id": "CVE-2025-4126",
  "lastModified": "2026-06-17T09:32:33.470",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.7,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-4126",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-05-15T14:10:43.569748Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-05-15T04:16:17.283",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/eg-series/trunk/lib/eg-plugin.inc.php#L546"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ab518a1b-304d-4b93-b807-65ef3941dd47?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-80"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}



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