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Improper neutralization of item names in projects feature (NC-SA-2020-010)

29th July 2019

Risk level: Low

CVSS v3 Base Score: 2 (AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N)

CWE: Improper Neutralization of Input During Web Page Generation (CWE-79)

HackerOne report: 662204


Improper neutralization of file names, conversation names and board names in Nextcloud Server 16.0.3, Nextcloud Talk 6.0.3 and Nextcloud Deck 0.6.5 causes an XSS when linking them with each others in a project.

Affected Software

  • Nextcloud Deck < 0.6.6 (CVE-2019-15619)

Action Taken

The error has been fixed.


It is recommended that the Nextcloud Deck is upgraded to 0.6.6.


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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