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.

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)

Published 2020-02-04 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.008 (54.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Nextcloud
Nextcloud iOS App — versions 2.25.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

Eriner/eriner

References

hackerone.com/reports/575562 (Permissions Required, Third Party Advisory)
nextcloud.com/security/advisory/ (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.