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OpenAdvisories

Product · calcom

cal.com

5 known vulnerabilities.

cal.com at a glance

Last 12 months
4
Critical · all time
2
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 2 December 2025: 1 vulnerability, 1 critical Dec 2025 January 2026: 1 vulnerability, 1 critical February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 0 vulnerabilities August 2026: 0 vulnerabilities September 2026: 0 vulnerabilities Sep October 2026: 2 vulnerabilities November 2026: 0 vulnerabilities
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5 results · Feed

  • Medium 6.3

    calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization

    A weakness has been identified in calcom cal.com and cal.diy up to 6.2.0. Impacted is the function createWebhookProcedure of the file packages/trpc/server/routers/viewer/webhook/util.ts of the component Webhook Handler. Executing a manipulation of the argumen…

  • Medium 5.4

    calcom cal.com/cal.diy Credentials delete credentials.delete privileges management

    A vulnerability was determined in calcom cal.com and cal.diy up to 6.2.0. This vulnerability affects the function credentials.delete of the file /api/trpc/credentials/delete of the component Credentials Handler. This manipulation of the argument teamId causes…

  • Critical 10.0

    Cal.com has an Authentication Bypass via Unvalidated Email in Custom JWT Callback

    Cal.com is open-source scheduling software. From 3.1.6 to before 6.0.7, there is a vulnerability in a custom NextAuth JWT callback that allows attackers to gain full authenticated access to any user's account by supplying a target email address via session.up…

  • Critical 9.9

    Cal.com Authentication Bypass via bad TOTP + password checks

    Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists d…

  • Medium 6.5

    Cal.com not expiring old sessions after enabling 2FA

    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…