High 8.9Published Jul 23, 2026

CVE-2024-58355Cal.com through 4.7.15 Cross-Site Scripting via booking questions

Updated under an hour ago (Oct 27, 2026, 12:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for calcom cal.diy

Exploited in the last 30 days

Cal.com (calcom/cal.diy) versions through 4.7.15 contain a stored cross-site scripting vulnerability. The single booking view (e.g., https://app.cal.com/booking/<id>) renders booking-question field labels via React's dangerouslySetInnerHTML without sanitizing or escaping user input. An attacker who can create an event type with a malicious booking-question label can inject arbitrary HTML/JavaScript that executes when a victim opens the crafted booking URL. The issue is fixed in v4.7.16.

CVSS: 8.9 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Weakness (CWE): CWE-80
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

calcom cal.diy calcom:cal.diy (from the name)	through 4.7.15	CNA record

References

References

https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8	vendor-advisory
https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def	patch
https://www.vulncheck.com/advisories/cal-com-through-cross-site-scripting-via-booking-questions-2	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.