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CVE-2025-66546

Estado: AnalizadaBaja (3.3)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Nextcloud — Calendar

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-66546",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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          "version": "2.0.3",
          "timestamp": "2025-12-05T18:32:11.684776Z"
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          "userInteraction": "NONE",
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  "lastModified": "2026-06-17T09:57:00.350",
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