https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T09:18:44.832315+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2023-39959 CVE-2023-39959 — Existence of calendars and address books can be checked by unauthenticated users 2026-10-06T09:18:44.852339+00:00

Affected: nextcloud security-advisories

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.9, 26.0.4, and 27.0.1, unauthenticated users could send a DAV request which reveals whether a calendar or an address book with the given identifier exists for the victim. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.