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CVE-2026-103493

Estado: AnalizadaAlta (8.1)—

In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible

CVSS

Probabilidad de explotación (EPSS)

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.

XSS almacenado (CWE-79) en YouTrack sin autenticación (PR:N, UI:R) permite inyectar código JavaScript malicioso que se ejecuta en navegadores de otros usuarios, facilitando robo de datos de sesión o credenciales.

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

Restrict Web-Based ContentUser TrainingExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Jetbrains — Youtrack

CWE

Referencias

JSON original (NVD)

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