CVE-2025-66546

CVE-2025-66546CVE-2025-66546

nextcloud / calendar

Description

Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.19, 5.5.6, and 6.0.1, the calendar app allowed blindly booking appointments with a squential ID without known the appointment token. This vulnerability is fixed in 4.7.19, 5.5.6, and 6.0.1.

Scoring

CVSS 3.3 ()
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Last modified2026-10-18
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.