MEDIUM🇵🇱 Wersja polska

CVE-2025-66550

CVSS 5.7v3.1pub. 2025-12-05upd. 2025-12-10

Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.17 and 5.2.4, when a malicious user creates a calendar event with a crafted attachment that links to a download link of a file on the same Nextcloud server, the file would be downloaded without the user confirming the action. This vulnerability is fixed in 4.7.17 and 5.2.4.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

  • Nextcloud Calendar

    APP
    Nextcloud
    4.0.0 – 4.7.17 (excl.)5.0.0 – 5.2.4 (excl.)
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CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References

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