3.3

CVE-2025-66546

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.
Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
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Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Calendar Version >= 4.0.0 < 4.7.19
Nextcloud ≫ Calendar Version >= 5.0.0 < 5.5.6
Nextcloud ≫ Calendar Version6.0.0 Update-
Nextcloud ≫ Calendar Version6.0.0 Updaterc1
Nextcloud ≫ Calendar Version6.0.0 Updaterc2
Nextcloud ≫ Calendar Version6.0.0 Updaterc3
Nextcloud ≫ Calendar Version6.0.0 Updaterc4
Nextcloud ≫ Calendar Version6.0.0 Updaterc5
Nextcloud ≫ Calendar Version6.0.0 Updaterc6
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.01% 0.01
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 3.3 1.8 1.4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE-639 Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

https://hackerone.com/reports/3275810
Vendor Advisory
Issue Tracking