CVE-2026-18317
The Foxtool All-in-One: Contact chat button, Custom login, Media optimize images plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.5.3. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify arbitrary subkeys of the foxtool_settings option, including enabling site-wide SVG uploads by toggling the media-up3 key, which can facilitate stored cross-site scripting via malicious SVG files.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Puntuación base: 4.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.21%
- Percentil entre todas las CVEs puntuadas: 11
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement70 % - Impacto principal
T1078.001Default Accountsstealth · persistence · privilege escalation · initial access75 % - Impacto secundario
T1059.007JavaScriptexecution65 %
Autenticado con acceso subscriber puede modificar opciones sin autorización adecuada (CWE-862), permitiendo escalada de privilegios y ejecución vía SVG malicioso. AV:N/PR:L coherente con T1210 (servicio remoto vulnerable).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-862
Referencias
- https://plugins.trac.wordpress.org/browser/foxtool/tags/2.5.3/inc/media.php#L854
- https://plugins.trac.wordpress.org/browser/foxtool/tags/2.5.3/inc/media.php#L868
- https://plugins.trac.wordpress.org/browser/foxtool/tags/2.5.3/inc/media.php#L926
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3659917%40foxtool&new=3659917%40foxtool
- https://www.wordfence.com/threat-intel/vulnerabilities/id/10864109-8155-414e-be96-58e4dc2401b1?source=cve
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-18317",
"cveTags": [],
"metrics": {
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{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-18317",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-18T14:36:58.378591Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security@wordfence.com",
"cvssData": {
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"version": "3.1",
"baseScore": 4.3,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "security@wordfence.com",
"affectedData": [
{
"vendor": "foxtheme",
"product": "Foxtool All-in-One: Contact chat button, Custom login, Media optimize images",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "2.5.3"
}
],
"defaultStatus": "unaffected"
}
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],
"published": "2026-09-18T07:16:49.800",
"references": [
{
"url": "https://plugins.trac.wordpress.org/browser/foxtool/tags/2.5.3/inc/media.php#L854",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/foxtool/tags/2.5.3/inc/media.php#L868",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/foxtool/tags/2.5.3/inc/media.php#L926",
"source": "security@wordfence.com"
},
{
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},
{
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"source": "security@wordfence.com"
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],
"vulnStatus": "Deferred",
"weaknesses": [
{
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"source": "security@wordfence.com",
"description": [
{
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"value": "CWE-862"
}
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}
],
"descriptions": [
{
"lang": "en",
"value": "The Foxtool All-in-One: Contact chat button, Custom login, Media optimize images plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.5.3. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify arbitrary subkeys of the foxtool_settings option, including enabling site-wide SVG uploads by toggling the media-up3 key, which can facilitate stored cross-site scripting via malicious SVG files."
}
],
"lastModified": "2026-09-18T15:17:06.530",
"sourceIdentifier": "security@wordfence.com"
}