CVE-2026-8499

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Helpfulcrowd Product Reviews", "vendor": "helpfulcrowd", "versions": [{"lessThanOrEqual": "1.2.9", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Helpfulcrowd Product Reviews plugin for WordPress is vulnerable to Authorization Bypass via PHP Type Juggling in versions up to, and including, 1.2.9. This is due to the `helpfulcrowd_validate_token()` function using a loose comparison operator (`!=`) instead of a strict comparison (`!==`) when validating the `token` parameter, while the corresponding REST route `/wp-json/helpfulcrowd/v1/update-settings` is registered with a `permission_callback` of `__return_true`, making it reachable by unauthenticated users; submitting a JSON boolean `true` as the `token` value causes PHP's loose comparison to evaluate as equal to the non-empty base64-encoded secret string, bypassing the check entirely. This makes it possible for unauthenticated attackers to invoke `helpfulcrowd_settings_endpoint()` and write arbitrary attacker-controlled key-value pairs directly into the `helpfulcrowd_options` WordPress database option via `update_option()` without any sanitization or allowlist filtering, enabling full unauthenticated modification of the plugin's stored configuration."}, {"lang": "es", "value": "El plugin Helpfulcrowd Product Reviews para WordPress es vulnerable a un bypass de autorizaci\u00f3n a trav\u00e9s de PHP Type Juggling en versiones hasta la 1.2.9, inclusive. Esto se debe a que la funci\u00f3n 'helpfulcrowd_validate_token()' utiliza un operador de comparaci\u00f3n flexible ('!=') en lugar de una comparaci\u00f3n estricta ('!==') al validar el par\u00e1metro 'token', mientras que la ruta REST correspondiente '/wp-json/helpfulcrowd/v1/update-settings' est\u00e1 registrada con un 'permission_callback' de '__return_true', haci\u00e9ndola accesible para usuarios no autenticados; enviar un booleano JSON 'true' como valor del 'token' hace que la comparaci\u00f3n flexible de PHP se eval\u00fae como igual a la cadena secreta no vac\u00eda codificada en base64, omitiendo la verificaci\u00f3n por completo. Esto hace posible que atacantes no autenticados invoquen 'helpfulcrowd_settings_endpoint()' y escriban pares clave-valor arbitrarios controlados por el atacante directamente en la opci\u00f3n de la base de datos de WordPress 'helpfulcrowd_options' a trav\u00e9s de 'update_option()' sin ninguna sanitizaci\u00f3n o filtrado por lista blanca, lo que permite la modificaci\u00f3n completa no autenticada de la configuraci\u00f3n almacenada del plugin."}], "id": "CVE-2026-8499", "lastModified": "2026-07-23T08:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8499", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-09T16:01:47.825981Z", "version": "2.0.3"}}]}, "published": "2026-06-09T05:16:39.373", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/helpfulcrowd-product-reviews/tags/1.2.9/includes/HelpfulcrowdCustomEndpoints.php#L13"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/helpfulcrowd-product-reviews/tags/1.2.9/includes/HelpfulcrowdCustomEndpoints.php#L71"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/helpfulcrowd-product-reviews/tags/1.2.9/includes/core.php#L122"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/26f34aa0-8584-4156-b084-d34a0ab0a997?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-843"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.2.9]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Helpfulcrowd Product Reviews", "source": "cna", "vendor": "helpfulcrowd"}, "product": "helpfulcrowd_product_reviews", "vendor": "helpfulcrowd"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "wordpress", "vendor": "wordpress"}], "created": "2026-06-09T06:15:06.496185+00:00", "updated": "2026-06-09T08:56:14.178670+00:00", "vendors": ["helpfulcrowd", "helpfulcrowd$PRODUCT$helpfulcrowd_product_reviews", "wordpress", "wordpress$PRODUCT$wordpress"]}