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EUVD-2026-33711

🗓️ 01 Jun 2026 16:59:36Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 9 Views

Authenticated users could enumerate users via the Calendar attendees endpoint; patch in Nextcloud 5.5.17 and 6.2.3.

Related
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
CVE
CVE-2026-45286
1 Jun 202616:59
cve
Cvelist
CVE-2026-45286 Nextcloud: Calendar app leaked user identifiers via attendee suggestion endpoint
1 Jun 202616:59
cvelist
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
[
  {
    "enisaIdVendor": [
      {
        "id": "6afd5525-798d-39e1-9b5d-428e604dc8e8",
        "vendor": {
          "name": "nextcloud"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "294ca44b-1076-3edd-8394-991046828d97",
        "product": {
          "name": "security-advisories",
          "vendor": {
            "name": "Kiteworks"
          }
        },
        "product_version": "6.2.0, < 6.2.3"
      },
      {
        "id": "fad3c8fa-604e-3a25-9190-99ad1def2978",
        "product": {
          "name": "security-advisories",
          "vendor": {
            "name": "Kiteworks"
          }
        },
        "product_version": "5.5.13, < 5.5.17"
      }
    ]
  }
]

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01 Jun 2026 19:13Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00281
SSVC
9