CVSS 4.0
9.3 criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:LCVE-2024-58353
Critical (9.3). EPSS 0.4% chance of exploitation in the next 30 days.
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.
Severity
CVSS 3.1
8.9 highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-31)
- CWE
- CWE-80
- Published
- Modified
- Record from
- the NVD, synced
References
- https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def
- https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8
- https://www.vulncheck.com/advisories/cal-com-through-cross-site-scripting-via-booking-questions
- https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8