CVE-2026-42524

Estado: AnalizadaAlta (8)—

Jenkins HTML Publisher Plugin 427 and earlier does not escape job name and URL in the legacy wrapper file, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.50%
Percentil entre todas las CVEs puntuadas: 40
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1189 Drive-by Compromiseinitial access95 %
Impacto principalT1059.007 JavaScriptexecution85 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access70 %

CWE-79 (XSS almacenado) + PR:L (requiere permisos de Item/Configure) + UI:R (interacción del usuario) en Jenkins permite inyectar script en archivo wrapper legacy. El atacante con privilegios configurables ejecuta JS en navegador de víctimas (T1059.007) y potencialmente obtiene sesión de usuario (T1

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

User Training Restrict Web-Based Content Application Developer Guidance Active Directory Configuration User Account Management Privileged Account Management

Tecnologías afectadas (1)

Jenkins — Html Publisher

CWE

CWE-79

Referencias

https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3706

JSON original (NVD)

Mostrar

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