CVE-2026-62854
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-79
Neutralización incorrecta de la entrada durante la generación de la página web (Cross-site Scripting)
Fecha de publicación:
06/11/2026
Última modificación:
06/11/2026
Descripción
*** Pendiente de traducción *** FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.225, a user who can edit a mailbox signature can combine a scriptable file uploaded through /uploads/upload with nested tag fragments that bypass Helper::stripDangerousTags(). The resulting external script is served from the same origin, so the script-src 'self' policy permits it when another user opens the affected mailbox reply editor or new-ticket page. The script executes with the victim's FreeScout privileges and can read visible data and perform same-origin actions. This issue is fixed in version 1.8.225.
Impacto
Puntuación base 3.x
7.60
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://github.com/freescout-help-desk/freescout/commit/315ad05f73886649cb8bc2c014dd74b62cc28502
- https://github.com/freescout-help-desk/freescout/commit/7f6a5042c1326ceaf511f13982178dce036cedbe
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.225
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-jpq8-j69f-mj98