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Missing ownership check on remote wipe endpoint (NC-SA-2020-018)

18th March 2020

Risk level: Low

CVSS v3 Base Score: 7.7 (AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H)

CWE: Insecure Direct Object Reference (CWE-639)

HackerOne report: 819807


An Insecure direct object reference vulnerability in Nextcloud Server 18.0.2 allowed an attacker to remote wipe devices of other users when sending a malicious request directly to the endpoint.

Affected Software

  • Nextcloud Server < 18.0.3 (CVE-2020-8154)
  • Nextcloud Server < 17.0.5 (CVE-2020-8154)

Action Taken

The error has been fixed.


It is recommended that the Nextcloud Server is upgraded to 18.0.3.


The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:

  • Tommy Suriel - Vulnerability discovery and disclosure.

This advisory is licensed CC BY-SA 4.0.

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