CVE-2025-66550 Nextcloud Calendar attachments of local files are offered to downloaded
| Reporter | Title | Published | Views | Family All 14 |
|---|---|---|---|---|
 | NextCloud Calendar Data Compromise | 19 Mar 202600:00 | – | bdu_fstec |
 | CVE-2025-66550 | 5 Dec 202518:13 | – | circl |
 | NextCloud Calendar security vulnerability | 5 Dec 202500:00 | – | cnnvd |
 | CVE-2025-66550 | 5 Dec 202516:56 | – | cve |
 | EUVD-2025-201443 | 5 Dec 202516:56 | – | euvd |
 | Calendar attachments of local files are offered to downloaded | 5 Dec 202507:57 | – | nextcloud |
 | Nextcloud: Calendar attachments of local files are offered to downloaded | 25 Apr 202507:08 | – | hackerone |
 | CVE-2025-66550 | 5 Dec 202516:56 | – | mend |
 | CVE-2025-66550 | 5 Dec 202517:16 | – | nvd |
 | PT-2025-49290 | 5 Dec 202500:00 | – | ptsecurity |
10
[
{
"vendor": "nextcloud",
"product": "security-advisories",
"versions": [
{
"version": ">= 5.0.0-rc.1, < 5.2.4",
"status": "affected"
},
{
"version": "< 4.7.17",
"status": "affected"
}
]
}
]Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
05 Dec 2025 16:56Current
CVSS 3.15.7
EPSS0.00341
SSVC