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CVE-2026-45286

🗓️ 01 Jun 2026 16:59:36Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 12 Views

Authenticated users can enumerate Nextcloud users via the Calendar attendees endpoint; patched in 5.5.17 and 6.2.3.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-45286
1 Jun 202616:59
attackerkb
Circl
CVE-2026-45286
12 May 202614:15
circl
CNNVD
Nextcloud Calendar 信息泄露漏洞
1 Jun 202600:00
cnnvd
Cvelist
CVE-2026-45286 Nextcloud: Calendar app leaked user identifiers via attendee suggestion endpoint
1 Jun 202616:59
cvelist
EUVD
EUVD-2026-33711
1 Jun 202616:59
euvd
Nextcloud
Calendar app leaked user identifiers via attendee suggestion endpoint
12 May 202609:17
nextcloud
NVD
CVE-2026-45286
1 Jun 202619:16
nvd
Positive Technologies
PT-2026-45530
1 Jun 202600:00
ptsecurity
RedhatCVE
CVE-2026-45286
5 Jun 202619:33
redhatcve
Vulnrichment
CVE-2026-45286 Nextcloud: Calendar app leaked user identifiers via attendee suggestion endpoint
1 Jun 202616:59
vulnrichment
Rows per page
NVD
Vulners
Node
nextcloudcalendarRange5.5.135.5.17
OR
nextcloudcalendarRange6.2.06.2.3
[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": ">= 5.5.13, < 5.5.17",
        "status": "affected"
      },
      {
        "version": ">= 6.2.0, < 6.2.3",
        "status": "affected"
      }
    ]
  }
]

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