Privilege escalation in Calcom Cal.com
CVE-2026-109143
A vulnerability was determined in calcom cal.com and cal.diy up to 6.2.0. This vulnerability affects the function credentials.delete of the file /api/trpc/credentials/delete of the component Credentials Handler. This manipulation of the argument teamId causes improper privilege management. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Calcom Cal.com — versions 6.0, 6.1, 6.2.0
- Calcom Cal.diy — versions 6.0, 6.1, 6.2.0
Weakness classification (CWE)
References
- gist.github.com/k4z01/7f7739e59ae595f7bdd45922adf2b547 (exploit)
- vuldb.com/cve/CVE-2026-109143 (third-party-advisory)
- vuldb.com/submit/978033 (third-party-advisory)
- vuldb.com/vuln/416882 (technical-description, vdb-entry)
- vuldb.com/vuln/416882/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-109143?
- CVE-2026-109143 is a medium-severity vulnerability in Calcom Cal.com, classified under Incorrect Privilege Assignment. CVSS score: 5.4/10. Published 2026-10-13.
- How severe is CVE-2026-109143?
- Medium severity. CVSS v3 base score is 5.4 out of 10.