What’s Vulnerable › Vulnerabilities

CVE-2026-4316: Reflected Cross-Site Scripting in software IsMyGym by Zuinq Studio

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-26
• Weakness: CWE-79

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

• Zuinq Studio IsMyGym: versions prior to v6.0.85

References

• https://www.incibe.es/en/incibe-cert/notices/aviso/reflected-cross-site-scripting-software-ismygym-zuinq-studio

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