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    CVE-2024-58355

    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.

    Published:Jul 23, 2026
    Last Modified:Jul 28, 2026
    EPS:Jul 23, 2026
    EPSS Score:0.00291
    CVSS Score:8.9

    Affected Products

    Vendor
    Cal
    Product
    Cal.com
    Vendor
    Calcom
    Product
    Cal.diy

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2024-58353 (CVSS 9.3) — Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the p…
    CVE-2026-23478 (CVSS 10) — Cal.com is open-source scheduling software. From 3.1.6 to before 6.0.7, there is a vulnerability in a custom N…
    CVE-2025-66489 (CVSS 9.9) — Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an…
    CVE-2023-37919 (CVSS 6.5) — Cal.com is open-source scheduling software. A vulnerability allows active sessions associated with an account …
    CVE-2023-1647 (CVSS 8.8) — Improper Access Control in GitHub repository calcom/cal.com prior to 2.7. …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High