CVE-2026-105124
W (vincent-peugnet/wcms) hasta la 3.18.0 contiene una vulnerabilidad de secuencias de comandos en sitios cruzados (XSS) almacenada que permite a atacantes no autenticados inyectar scripts mediante el campo de usuario del inicio de sesión y el campo de sitio web de los comentarios de visitantes. Los atacantes pueden enviar inicios de sesión fallidos que se renderizan sin escapar en el visor de registros adminlog.php, o URL de comentarios que se imprimen en atributos href en editrightbar.php, ejecutando scripts con privilegios de administrador o editor.
Traducción automática del texto original de NVD (en inglés).
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Puntuación base: 5.3
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: 11/10/2026
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
T1189Drive-by Compromiseinitial access95 % - Impacto principal
T1059.007JavaScriptexecution90 % - Impacto secundario
T1098Account Manipulationpersistence · privilege escalation75 %
CWE-79 (XSS almacenado) confirmado por inyección de scripts en campos no escapados (login, comentarios) ejecutados con privilegios de admin/editor. Ataque sin autenticación con UI:R (phishing).
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-79
Referencias
- https://github.com/vincent-peugnet/wcms
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Controllerconnect.php#L56
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/view/templates/adminlog.php#L71
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/view/templates/editrightbar.php#L110
- https://github.com/vincent-peugnet/wcms/issues/662
- https://www.vulncheck.com/advisories/w-wcms-through-3.18.0-unauthenticated-stored-xss-via-login-username-and-comments
JSON original (NVD)
Mostrar
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"version": "2.0.3",
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"valueDensity": "NOT_DEFINED",
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"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
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"vulnConfidentialityImpact": "LOW",
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"modifiedAttackRequirements": "NOT_DEFINED",
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"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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"published": "2026-10-04T00:16:35.853",
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"source": "disclosure@vulncheck.com"
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"description": [
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"descriptions": [
{
"lang": "en",
"value": "W (vincent-peugnet/wcms) through 3.18.0 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via the login user field and visitor comment website field. Attackers can submit failed logins rendered unescaped in the adminlog.php log viewer, or comment URLs echoed into href attributes in editrightbar.php, executing script with administrator or editor privileges."
}
],
"lastModified": "2026-10-06T17:17:17.360",
"sourceIdentifier": "disclosure@vulncheck.com"
}