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PYSEC-2026-3866 nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

🗓️ 10 Sep 2026 09:44:56Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

Unauthenticated webhook in nextcloud-mcp-server deletes Qdrant vector data when secret unset.

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