CVE-2021-20725: CALENDAR01 Project CALENDAR01

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

Reflected cross-site scripting vulnerability in the admin page of [Calendar01] free edition ver1.0.1 and earlier allows a remote attacker to inject an arbitrary script via unspecified vectors.

Affected products

• CALENDAR01 Project CALENDAR01: up to and including 1.0.1

Published 2021-05-24. Last modified 2026-06-17.