CVE-2026-45286
Nextcloud: Calendar app leaked user identifiers via attendee suggestion endpoint
Vexday Risk Score
13Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 4.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
01 jun 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
Nextcloud is an open source content collaboration platform. From versions 5.5.13 to before 5.5.17, and 6.2.0 to before 6.2.3, an authenticated user can enumerate users on the same Nextcloud instance by using the Calendar app's endpoint for suggesting attendees. The sharing restrictions, applied to other endpoints, were not effective here. This issue has been patched in versions 5.5.17 and 6.2.3.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Produtos afetados
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