Security Advisory

CVE-2024-58353

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-23 21:16:42

Last updated 2026-07-24 21:35:07

Assigner VulnCheck

CVSS score 9.3

State PUBLISHED

Description

Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the publicly accessible single booking view (e.g., /booking/<id>). Booking question (form field) labels are rendered via React's dangerouslySetInnerHTML without proper input sanitization or CSP, so an attacker who can create an event type with a malicious booking question label can inject arbitrary HTML/JavaScript that executes when a victim visits the booking view URL. Self-hosted instances with open registration are particularly at risk. The issue is fixed in version 4.7.16.

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