CVE-2026-4316
Medium
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.
SeverityMedium
CVSS5.1
Exploit probability—
ProductIsMyGym
PublishedOct 26, 2026
First seenOct 26, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Zuinq Studio IsMyGym | versions prior to v6.0.85 | — |
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