CVE-2026-23478

CRITICAL

9.8

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.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/13/2026

Derniere modification2/3/2026

Sourcenvd

Observations honeypot0

Produits affectes

cal:cal.com

Faiblesses (CWE)

CWE-602CWE-639

References

https://github.com/calcom/cal.com/security/advisories/GHSA-7hg4-x4pr-3hrg(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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