CVE-2026-23478
Last modified
CVE-2026-23478 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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(). EPSS estimates a 0.40% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cal | Cal.Com | >= 3.1.6, < 6.0.7 |
References
- https://github.com/calcom/cal.com/security/advisories/GHSA-7hg4-x4pr-3hrgThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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