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CVE-2024-58353— 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.

Cal.com Cal.diy是Cal.com公司的一款日程管理软件。 Cal.com Cal.diy 4.7.15及之前版本存在跨站脚本漏洞，该漏洞源于React的dangerouslySetInnerHTML渲染标签时未进行输入清理和CSP，容易受到跨站脚本攻击。

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-2024-58353

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 (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.
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
Cal.com Cal.diy 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cal.com Cal.diy是Cal.com公司的一款日程管理软件。 Cal.com Cal.diy 4.7.15及之前版本存在跨站脚本漏洞，该漏洞源于React的dangerouslySetInnerHTML渲染标签时未进行输入清理和CSP，容易受到跨站脚本攻击。
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-2024-58353

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III. Intelligence Information for CVE-2024-58353

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Patches & Fixes for CVE-2024-58353 (1)

Vendor Advisories for CVE-2024-58353 (1)

News Coverage for CVE-2024-58353 (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-2024-58355 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-2024-58353

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