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Improper sanitization of HTML in directory names (NC-SA-2019-009)

26th July 2019

Risk level: Low

CVSS v3 Base Score: 0 (AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:N)

CWE: Improper Neutralization of Script-Related HTML Tags in a Web Page (CWE-80)

HackerOne report: 631227


Some basic HTML tags were rendered as Markup in directory names.

Affected Software

  • Nextcloud Android < 3.7.0 (CVE-2019-5450)

Action Taken

The error has been fixed.


It is recommended that users upgrade to version 3.7.0 or later.


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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