Security Advisory

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Password of share by mail is not hashed when given on the create share call (NC-SA-2020-026)

4th June 2020

Risk level: Low

CVSS v3 Base Score: 5 (AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L)

CWE: Plaintext Storage of a Password (CWE-256)

HackerOne report: 885041


A logic error in Nextcloud Server 19.0.0 caused a plaintext storage of the share password when it was given on the initial create API call.

Affected Software

  • Nextcloud Server < 19.0.1 (CVE-2020-8183)
  • Nextcloud Server < 18.0.6 (CVE-2020-8183)

Action Taken

The error has been fixed.


It is recommended that the Nextcloud Server is upgraded to 19.0.1.


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

This advisory is licensed CC BY-SA 4.0.

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