https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-05T11:38:16.317010+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2025-66511 CVE-2025-66511 — Nextcloud Calendar app used predictable proposal participant tokens 2026-10-05T11:38:16.340493+00:00

Affected: nextcloud security-advisories

Nextcloud Calendar is a calendar app for Nextcloud. Prior to 6.0.3, the Calendar app generates participant tokens for meeting proposals using a hash function, allowing an attacker to compute valid participant tokens, which allowed them to request details and submit dates in meeting proposals. The tokens are not purely random generated. This vulnerability is fixed in 6.0.3.