CVE-2026-6397

{"id": "CVE-2026-6397", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6397", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-20T17:18:25.618732Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "cvmh", "product": "Sticky", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "2.5.6"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-20T02:16:37.770", "references": [{"url": "https://plugins.trac.wordpress.org/browser/sticky/tags/2.5.6/includes/functions.php#L118", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/sticky/tags/2.5.6/includes/shortcode.php#L7", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/sticky/trunk/includes/functions.php#L118", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/sticky/trunk/includes/shortcode.php#L7", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/135783c5-8175-4775-a013-f1e2bef04479?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The Sticky plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `cvmh-sticky` shortcode `readmoretext` attribute in versions up to and including 2.5.6. This is due to insufficient input sanitization and output escaping in the `cvmh_sticky_front_render()` function \u2014 the `readmoretext` attribute value is passed through `apply_filters()` and directly concatenated into the HTML output without any escaping function such as `esc_html()`. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses a page containing the injected shortcode."}, {"lang": "es", "value": "El plugin Sticky para WordPress es vulnerable a Cross-Site Scripting Almacenado a trav\u00e9s del atributo 'readmoretext' del shortcode 'cvmh-sticky' en versiones hasta la 2.5.6 inclusive. Esto se debe a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes en la funci\u00f3n 'cvmh_sticky_front_render()' - el valor del atributo 'readmoretext' se pasa a trav\u00e9s de 'apply_filters()' y se concatena directamente en la salida HTML sin ninguna funci\u00f3n de escape como 'esc_html()'. Esto hace posible que atacantes autenticados con acceso de nivel Colaborador o superior inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina que contenga el shortcode inyectado."}], "lastModified": "2026-07-24T08:10:00.150", "sourceIdentifier": "security@wordfence.com"}