CVE-2026-23478

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.update(). This vulnerability is fixed in 6.0.7.

CVSS

No CVSS.

References

Link	Resource
https://github.com/calcom/cal.com/security/advisories/GHSA-7hg4-x4pr-3hrg

Configurations

No configuration.

History

13 Jan 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-13 22:16

Updated : 2026-01-14 16:25

NVD link : CVE-2026-23478

Mitre link : CVE-2026-23478

CVE.ORG link : CVE-2026-23478

JSON object : View

Products Affected

No product.

CWE

CWE-602

Client-Side Enforcement of Server-Side Security

CWE-639

Authorization Bypass Through User-Controlled Key

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CVE-2026-23478

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