CVE-2026-55872

CVE-2026-55872 · GYM One admin user list is vulnerable to stored cross-site scripting

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GYM One is open-source gym management software for fitness centers, personal trainers, and sports clubs. Prior to 1.4.1, GYM One's admin/users/index.php renders the stored firstname, lastname, and email profile fields into the administrator user list without HTML output encoding. An attacker who can store values in those fields can cause content to execute in an administrator's browser when the administrator visits /admin/users/. The persistent script can access administrator-session data or perform actions with the administrator's privileges until the stored record is removed. This issue is fixed in version 1.4.1.

CVSS 8.7 · Высокий · EPSS 0,3%

Опубликовано

2026-10-15T18:27:06.595Z

Обновлено

2026-10-21T01:03:46.364Z

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