Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
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.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
🟠 Nextcloud, Broken Access Control, #CVE-2026-45286 (Medium) -DC-Jun2026-195 https://dailycve.com/nextcloud-broken-access-control-cve-2026-45286-medium-dc-jun2026-195/
Post summary
A newly disclosed medium‑severity vulnerability affects Nextcloud’s access control (CVE‑2026‑45286); a link to further details is provided.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | nextcloud | calendar | - | - | - |