PT-2026-64181 · Cal.Com · Cal.Com
CVSS v4.0
9.3
Critical
| Vector | AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L |
Name of the Vulnerable Software and Affected Versions
Cal.com versions prior to 4.7.16
Description
A stored cross-site scripting issue exists where the single booking view endpoint '/booking/' renders booking-question field labels using React's
dangerouslySetInnerHTML without proper sanitization or escaping of user input. This allows an attacker to create an event type with a malicious label to inject arbitrary HTML or JavaScript, which then executes when a victim accesses the crafted booking URL.Recommendations
Update to version 4.7.16.
Exploit
Fix
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Cal.Com