CVE-2026-3997
The Text Toggle plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute of the [tt_part] and [tt] shortcodes in all versions up to and including 1.1. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, in the avp_texttoggle_part_shortcode() function, the 'title' attribute is extracted from shortcode attributes and concatenated directly into HTML output without any escaping — both within an HTML attribute context (title="...") on line 116 and in HTML content on line 119.
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While the 'class' attribute is properly validated using ctype_alnum(), the 'title' attribute has no sanitization whatsoever. An attacker can inject double-quote characters to break out of the title attribute and inject arbitrary HTML attributes including event handlers. 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 an injected page.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Puntuación base: 6.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.41%
- Percentil entre todas las CVEs puntuadas: 33
- Fecha de la puntuación: 5/10/2026
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).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-79
Referencias
- https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L108
- https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L116
- https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L119
- https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L72
- https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L108
- https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L116
- https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L119
- https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L72
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d7ac0683-120f-4e76-9d44-5ee1c789b2c8?source=cve
JSON original (NVD)
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{
"id": "CVE-2026-3997",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3997",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-03-23T16:26:51.488981Z"
}
}
],
"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": "hoosierdragon",
"product": "Text Toggle",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.1"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-03-21T04:17:37.530",
"references": [
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L108",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L116",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L119",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/tags/1.1/avp-texttoggle.php#L72",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L108",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L116",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L119",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/text-toggle/trunk/avp-texttoggle.php#L72",
"source": "security@wordfence.com"
},
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d7ac0683-120f-4e76-9d44-5ee1c789b2c8?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 Text Toggle plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute of the [tt_part] and [tt] shortcodes in all versions up to and including 1.1. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, in the avp_texttoggle_part_shortcode() function, the 'title' attribute is extracted from shortcode attributes and concatenated directly into HTML output without any escaping — both within an HTML attribute context (title=\"...\") on line 116 and in HTML content on line 119. While the 'class' attribute is properly validated using ctype_alnum(), the 'title' attribute has no sanitization whatsoever. An attacker can inject double-quote characters to break out of the title attribute and inject arbitrary HTML attributes including event handlers. 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 an injected page."
},
{
"lang": "es",
"value": "El plugin Text Toggle para WordPress es vulnerable a Cross-Site Scripting Almacenado a través del atributo 'title' del shortcode de los shortcodes [tt_part] y [tt] en todas las versiones hasta la 1.1 inclusive. Esto se debe a una sanitización de entrada y un escape de salida insuficientes en los atributos de shortcode proporcionados por el usuario. Específicamente, en la función avp_texttoggle_part_shortcode(), el atributo 'title' se extrae de los atributos del shortcode y se concatena directamente en la salida HTML sin ningún escape — tanto dentro de un contexto de atributo HTML (title=\"...\") en la línea 116 como en el contenido HTML en la línea 119. Mientras que el atributo 'class' se valida correctamente usando ctype_alnum(), el atributo 'title' no tiene ninguna sanitización en absoluto. Un atacante puede inyectar caracteres de comillas dobles para salir del atributo title e inyectar atributos HTML arbitrarios, incluidos los controladores de eventos. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, inyecten scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada."
}
],
"lastModified": "2026-06-17T10:44:35.660",
"sourceIdentifier": "security@wordfence.com"
}