Vulnerability · Published Oct 26, 2026 · Assigned by INCIBE
CVE-2026-4316Reflected Cross-Site Scripting in software IsMyGym by Zuinq Studio
Medium 5.1
In plain English
A medium-severity cross-site scripting in IsMyGym from Zuinq Studio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Official description
Reflected Cross-Site Scripting (XSS) in Gym Management Software IsMyGym by Zuinq Studio affecting the reservation endpoint where the 'ret' parameter is reflected in the HTTP response without any proper sanitization. Successfull explotation of this vulnerability could allow an attacker to inject arbitrary JavaScript code executed in the context of the victim’s browser.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zuinq Studio | IsMyGym | versions prior to v6.0.85 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N