XSS in Nextcloud

CVE-2019-15614

Missing sanitization in the iOS App 2.24.4 causes an XSS when opening malicious HTML files.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (52.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nextcloud
N/a Nextcloud Ios App — versions 2.25.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

Eriner/eriner

References

support@hackerone.com (Permissions Required, Third Party Advisory, x_refsource_MISC)
support@hackerone.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2019-15614?: CVE-2019-15614 is a medium-severity vulnerability in Nextcloud, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-02-04.
How severe is CVE-2019-15614?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2019-15614 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.