What is CVE-2026-9303?

CVE-2026-9303 is a medium-severity vulnerability in Calcom Cal.diy, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-05-23.

How severe is CVE-2026-9303?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Calcom Cal.diy

CVE-2026-9303

A vulnerability was identified in calcom cal.diy up to 4.9.4. Impacted is an unknown function. The manipulation leads to cross-site request forgery. It is possible to initiate the attack remotely. The exploit is publicly available and migh…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.000 (5.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Calcom Cal.diy — versions 4.9.0, 4.9.1, 4.9.2

Weakness classification (CWE)

References

cna@vuldb.com (vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (related)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-9303?: CVE-2026-9303 is a medium-severity vulnerability in Calcom Cal.diy, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-05-23.
How severe is CVE-2026-9303?: Medium severity. CVSS v3 base score is 4.3 out of 10.