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Cal Com

6 CVEs product

Monthly

CVE-2026-57858 Aug 12, 12:23 CRITICAL Act Now

Stored cross-site scripting in the self-hosted Cal.com (Cal.diy) scheduling platform, versions 2.1.1 through 6.2.0, lets an authenticated event owner break out of an inline analytics script string literal in the BookingPageTagManager component by supplying an unsanitized tracking ID, causing attacker-controlled JavaScript to run for every visitor of the public booking page. The flaw enables session-cookie theft, forging of authenticated actions, and self-propagating (wormable) spread by chaining to CSRF-able endpoints. No public exploit identified at time of analysis, though a third-party technical write-up exists.

XSS CSRF Cal Com Cal Com Self Hosted Cal Diy
NVD GitHub
CVSS 4.0
9.3
EPSS
0.4%
CVE-2026-16624 Jul 22, 18:31 CRITICAL PATCH Act Now

Authorization bypass in Cal.com DIY allows any authenticated user to create webhooks on arbitrary teams by injecting an unvalidated teamId, enabling exfiltration of sensitive booking data including organizer/attend

Authentication Bypass Cal Diy Cal Com
NVD GitHub
CVSS 3.1
9.6
EPSS
0.2%
CVE-2026-23478 Jan 13, 22:16 CRITICAL Act Now

Cal.com scheduling software (3.1.6 to 6.0.7) has a critical authentication bypass in the NextAuth JWT callback. Attackers can gain full access to any user account by supplying a target email via session.update(). Fixed in 6.0.7.

Information Disclosure Cal.Com Cal Cal Com
NVD GitHub
CVSS 3.1
9.8
EPSS
0.1%
CVE-2025-66489 Dec 03, 20:16 CRITICAL POC PATCH Act Now

A remote code execution vulnerability in Cal.com (CVSS 9.8) that allows an attacker. Risk factors: public PoC available.

Authentication Bypass Cal.Com Cal Cal Com
NVD GitHub
CVSS 3.1
9.8
EPSS
0.1%
CVE-2023-37919 Jul 25, 21:15 MEDIUM This Month

Cal.com is open-source scheduling software. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Cal Cal Com
NVD GitHub
CVSS 3.1
5.4
EPSS
0.3%
CVE-2023-1647 Mar 27, 01:15 HIGH POC PATCH This Week

Improper Access Control in GitHub repository calcom/cal.com prior to 2.7. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Authentication Bypass Cal Cal Com
NVD GitHub
CVSS 3.1
8.8
EPSS
0.8%
EPSS 0% CVSS 9.3
CRITICAL Act Now

Stored cross-site scripting in the self-hosted Cal.com (Cal.diy) scheduling platform, versions 2.1.1 through 6.2.0, lets an authenticated event owner break out of an inline analytics script string literal in the BookingPageTagManager component by supplying an unsanitized tracking ID, causing attacker-controlled JavaScript to run for every visitor of the public booking page. The flaw enables session-cookie theft, forging of authenticated actions, and self-propagating (wormable) spread by chaining to CSRF-able endpoints. No public exploit identified at time of analysis, though a third-party technical write-up exists.

XSS CSRF Cal Com +1
NVD GitHub
EPSS 0% CVSS 9.6
CRITICAL PATCH Act Now

Authorization bypass in Cal.com DIY allows any authenticated user to create webhooks on arbitrary teams by injecting an unvalidated teamId, enabling exfiltration of sensitive booking data including organizer/attend

Authentication Bypass Cal Diy Cal Com
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL Act Now

Cal.com scheduling software (3.1.6 to 6.0.7) has a critical authentication bypass in the NextAuth JWT callback. Attackers can gain full access to any user account by supplying a target email via session.update(). Fixed in 6.0.7.

Information Disclosure Cal.Com Cal +1
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC PATCH Act Now

A remote code execution vulnerability in Cal.com (CVSS 9.8) that allows an attacker. Risk factors: public PoC available.

Authentication Bypass Cal.Com Cal +1
NVD GitHub
EPSS 0% CVSS 5.4
MEDIUM This Month

Cal.com is open-source scheduling software. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Cal Cal Com
NVD GitHub
EPSS 1% CVSS 8.8
HIGH POC PATCH This Week

Improper Access Control in GitHub repository calcom/cal.com prior to 2.7. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Authentication Bypass Cal Cal Com
NVD GitHub

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