CVE-2026-45281 Nextcloud: Cross-Account Calendar Takeover via Unauthorized Group-Member-Set Update

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, with the knowledge of other users’ principal URL an attacker could possibly send a request to gain full access to their calendar. Therefore, the...

Nextcloud Server 安全漏洞

NextCloud Server is an open-source NextCloud server program developed by NextCloud. There were security vulnerabilities in versions 32.0.0 to 32.0.9 and 33.0.0 to 33.0.3 of NextCloud Server. These vulnerabilities stemmed from improper authorization control in the calendar backend, allowing...