CVE-2026-4316

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 60/100
Published: 2026-10-26 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Active
AT: None
VC: Low
VI: Low
VA: None

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.

Weakness Classification (1)

Bug Bounty Relevance

60 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

5.1 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.42%
Raw Score 0.004180
Percentile 36.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00418
2026-10-28
0.00418

Intelligence Sources

mitre ref →
nvd ref →