Duty Analyst: Joseph McCarthy

CVE-2026-23478

Published: 2026-01-13 22:16:08 | Last modified: 2026-06-17 10:21:40

CRITICAL CVSS 10.0
No EPSS data

Description

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 details

Severity
critical
Score
10.0
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

This CVE is not currently listed in the EPSS dataset.

Show JSON
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                        "version": "2.0.3",
                        "timestamp": "2026-01-14T16:56:18.762218Z"
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                        "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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                        "value": "CWE-602"
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