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CVE-2026-8441

Full vulnerability record from the local CVENow database.

Description

The WP Review Slider Pro plugin for WordPress is vulnerable to SQL Injection via the 'notinstring' parameter of the wprp_load_more_revs AJAX action in versions up to, and including, 12.7.2. The parameter is read via $_POST['notinstring'] and passed through sanitize_text_field() — which strips HTML and whitespace but does not provide SQL safety. The value is then concatenated directly into a numeric/unquoted `AND id NOT IN (...)` clause and executed via $wpdb->get_results() without $wpdb->prepare() or intval() casting. Because the value sits in an unquoted numeric context, WordPress's wp_magic_quotes protection (which only escapes embedded quotes) is ineffective. The AJAX hook is registered via wp_ajax_nopriv_wprp_load_more_revs, and the required check_ajax_referer nonce is publicly available via wp_localize_script on any frontend page that renders the plugin shortcode, so an unauthenticated attacker who can reach a public page hosting the plugin can extract arbitrary data from the database via blind/time-based injection.

Severity
HIGH
CVSS score
7.5 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-07-02 10:16:28.617000
Last modified
2026-10-25 21:10:00.770000
View original CVE JSON
{
  "id": "CVE-2026-8441",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-02T10:16:28.617",
  "lastModified": "2026-10-25T21:10:00.770",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The WP Review Slider Pro plugin for WordPress is vulnerable to SQL Injection via the 'notinstring' parameter of the wprp_load_more_revs AJAX action in versions up to, and including, 12.7.2. The parameter is read via $_POST['notinstring'] and passed through sanitize_text_field() — which strips HTML and whitespace but does not provide SQL safety. The value is then concatenated directly into a numeric/unquoted `AND id NOT IN (...)` clause and executed via $wpdb->get_results() without $wpdb->prepare() or intval() casting. Because the value sits in an unquoted numeric context, WordPress's wp_magic_quotes protection (which only escapes embedded quotes) is ineffective. The AJAX hook is registered via wp_ajax_nopriv_wprp_load_more_revs, and the required check_ajax_referer nonce is publicly available via wp_localize_script on any frontend page that renders the plugin shortcode, so an unauthenticated attacker who can reach a public page hosting the plugin can extract arbitrary data from the database via blind/time-based injection."
    },
    {
      "lang": "es",
      "value": "El plugin WP Review Slider Pro para WordPress es vulnerable a inyección SQL a través del parámetro ’notinstring’ de la acción AJAX wprp_load_more_revs en versiones hasta la 12.7.2, inclusive. El parámetro se lee a través de parámetro  y se pasa por sanitize_text_field() - que elimina HTML y espacios en blanco pero no proporciona seguridad SQL. El valor se concatena directamente en una cláusula numérica/sin comillas ’AND id NOT IN (...)’ y se ejecuta a través de $wpdb  ->  get_results() sin $wpdb  ->  prepare() ni la conversión intval(). Debido a que el valor se encuentra en un contexto numérico sin comillas, la protección wp_magic_quotes de WordPress (que solo escapa comillas incrustadas) es ineficaz. El hook AJAX se registra a través de wp_ajax_nopriv_wprp_load_more_revs, y el nonce check_ajax_referer requerido está disponible públicamente a través de wp_localize_script en cualquier página de frontend que renderice el shortcode del plugin, por lo que un atacante no autenticado que pueda acceder a una página pública que aloje el plugin puede extraer datos arbitrarios de la base de datos a través de inyección ciega/basada en tiempo."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "https://wpreviewslider.com/",
          "product": "WP Review Slider Pro",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "12.7.2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-02T12:36:37.994665Z",
          "id": "CVE-2026-8441",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://wpreviewslider.userecho.com/knowledge-bases/2/articles/88-change-log",
      "source": "[email protected]"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/396ba24f-e0f7-4374-a9ce-d9abddb87b39?source=cve",
      "source": "[email protected]"
    }
  ]
}