CVE-2024-58355 | Cal.com (calcom/cal.diy) versions through 4.7.15 contain a s… | CVSS 8.9 HIGH

Description

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.

Metadata

CVE ID: CVE-2024-58355
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-08 15:20 UTC
Published: 2026-07-23 21:16 UTC
Last updated: 2026-07-23 21:16 UTC
Primary CWE: CWE-80
Improper Neutralization of Script-Related HTML Tags in a Web…
Vendor / Product: calcom / cal.diy
Sources: cve.org · NVD

Severity & Metrics

8.9 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

Affected products (1)

Vendor	Product	Platform	Versions
calcom	cal.diy	—	0 ≤ 4.7.15

Weakness (CWE)

CWE	Source	Description
CWE-80	cna	Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
8.9	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

References (3)

GitHub Security Advisory (GHSA-vgj7-76cw-h6f8) https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8
https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def
VulnCheck Advisory: Cal.com through 4.7.15 Cross-Site Scripting via booking questions https://www.vulncheck.com/advisories/cal-com-through-cross-site-scripting-via-booking-questions-2