XSS in Nextcloud

CVE-2019-5450

Improper sanitization of HTML in directory names in the Nextcloud Android app prior to version 3.7.0 allowed to style the directory name in the header bar when using basic HTML.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (40.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2019-5450: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

  • Nextcloud
  • Com.nextcloud.client — versions 3.7.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-5450?
CVE-2019-5450 is a medium-severity vulnerability in Nextcloud, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.8/10. Published 2019-07-30.
How severe is CVE-2019-5450?
Medium severity. CVSS v3 base score is 6.8 out of 10.