CVE-2025-66546 | Nextcloud Calendar up to 4.7.18/5.5.5/6.0.0 authorization

A vulnerability, which was classified as problematic, has been found in Nextcloud Calendar up to 4.7.18/5.5.5/6.0.0. The impacted element is an unknown function. The manipulation leads to authorization bypass.

This vulnerability is uniquely identified as CVE-2025-66546. Local access is required to approach this attack. No exploit exists.

It is advisable to upgrade the affected component.VulDB Recent EntriesRead More