CVE-2026-55872
highGYM One is open-source gym management software for fitness centers, personal trainers, and sports clubs.
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/mayerbalintdev/GYM-One/commit/d3a0cf134f0ab3ac12aee7dca283b93c4290dcc4 security-advisories@github.com
- https://github.com/mayerbalintdev/GYM-One/releases/tag/V1.4.1 security-advisories@github.com
- https://github.com/mayerbalintdev/GYM-One/security/advisories/GHSA-75g9-vp9w-5388 security-advisories@github.com
- https://github.com/mayerbalintdev/GYM-One/security/advisories/GHSA-75g9-vp9w-5388 134c704f-9b21-4f2e-91b3-4a467353bcc0