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    CVE-2023-37919

    Cal.com is open-source scheduling software. A vulnerability allows active sessions associated with an account to remain active even after enabling 2FA. When activating 2FA on a Cal.com account that is logged in on two or more devices, the account stays logged in on the other device(s) stays logged in without having to verify the account owner's identity. As of time of publication, no known patches or workarounds exist.

    Published:Jul 25, 2023
    Last Modified:Nov 21, 2024
    EPS:Jul 25, 2023
    EPSS Score:0.00113
    CVSS Score:6.5

    Affected Products

    Vendor
    Cal
    Product
    Cal.com

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-613 Insufficient Session Expiration

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-71389 (CVSS 10) — Cal.com (calcom/cal.diy) before 5.9.9 is vulnerable to unauthenticated remote code execution because it bundle…
    CVE-2024-58355 (CVSS 9.3) — Cal.com (calcom/cal.diy) versions through 4.7.15 contain a stored cross-site scripting vulnerability. The sing…
    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-2023-1647 (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