EUVD Vulnerability Catalog

EUVD-2026-109708

Severity: MEDIUM Base Score: 5.1 CVSS Version: 4.0

Vulnerability 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.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: 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

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Attack Requirements (AT): None

▪ Privileges Required (PR): None

▪ User Interaction (UI): Active

▪ Vulnerability Confidentiality Impact (VC): Low

▪ Vulnerability Integrity Impact (VI): Low

▪ Vulnerability Availability Impact (VA): None

▪ Subsequent Confidentiality Impact (SC): None

▪ Subsequent Integrity Impact (SI): None

▪ Subsequent Availability Impact (SA): None

Affected Vendors & Systems

Vendor Zuinq Studio

References & Advisory Links

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

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

INCIBE

EPSS Probability

Known Aliases

CVE-2026-4316

Published On

2026-10-26

Last Updated

2026-10-26