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

Quick assessment

Affected
calcom cal.diy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

calcom cal.diy是calcom的Web中间件。 calcom cal.diy 4.7.15及之前版本存在跨站脚本漏洞，该漏洞源于使用React的dangerouslySetInnerHTML渲染booking-question字段标签时未进行输入清理或转义，可能导致攻击者创建带有恶意预订问题标签的事件类型，在受害者打开特制预订URL时注入并执行任意HTML/JavaScript。

CVSS 8.9 · High EPSS 0.41% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
calcom cal.diy ≤ 4.7.15 affected
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I. Basic Information for CVE-2024-58355

Vulnerability Information
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Vulnerability Title
Cal.com through 4.7.15 Cross-Site Scripting via booking questions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
calcom cal.diy 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
calcom cal.diy是calcom的Web中间件。 calcom cal.diy 4.7.15及之前版本存在跨站脚本漏洞，该漏洞源于使用React的dangerouslySetInnerHTML渲染booking-question字段标签时未进行输入清理或转义，可能导致攻击者创建带有恶意预订问题标签的事件类型，在受害者打开特制预订URL时注入并执行任意HTML/JavaScript。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
calcom cal.diy 0 ~ 4.7.15 -

II. Public POCs for CVE-2024-58355

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III. Intelligence Information for CVE-2024-58355

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Patches & Fixes for CVE-2024-58355 (1)

Vendor Advisories for CVE-2024-58355 (1)

News Coverage for CVE-2024-58355 (1)

Same Patch Batch · calcom · 2026-07-23 · 4 CVEs total

CVE-2025-71389 10.0 CRITICAL Cal.com before 5.9.9 Remote Code Execution via RSC
CVE-2024-58354 9.9 CRITICAL cal.com Repository Takeover via pull_request_target Workflow
CVE-2024-58353 8.9 HIGH Cal.com through 4.7.15 Cross-Site Scripting via booking questions

IV. Related Vulnerabilities

Same product: cal.diy
Same vendor: calcom
Same weakness: CWE-80

V. Comments for CVE-2024-58355

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