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NextcloudApplication

CVE-2019-15614

MEDIUM · 5.4 CVSS v3.1 Published 2020-02-04
Fix available
A fix is available. Upgrade to 2.25.0 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

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

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

This is a cross-site scripting (XSS) vulnerability in iOS App version 2.24.4 where the application fails to properly sanitize HTML content when rendering or opening HTML files. An attacker can craft a malicious HTML file that, when opened within the app, executes arbitrary JavaScript code in the context of the application.

MitigationThe vendor should implement proper input sanitization and output encoding for HTML content before rendering. Users should update to a patched version of the app and avoid opening untrusted HTML files from unknown sources.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
NextcloudApplication
Affected:< 2.25.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check Nextcloud iOS app version
    Open the App Store app, search for Nextcloud, and view the installed version. Alternatively, open the Nextcloud iOS app, go to Settings > About to find the version number.
    Affected if The installed version is 2.24.4 or any version below 2.25.0
  2. Verify HTML file handling capability
    Confirm that the Nextcloud iOS app is configured to open or preview HTML files from the Nextcloud server or attached files.
    Affected if The app can open, preview, or render HTML files within its interface
  3. Determine if HTML files are being accessed
    Review your Nextcloud usage to see if you have accessed or downloaded any HTML files through the iOS app.
    Affected if You have opened or attempted to open HTML files using the Nextcloud iOS app

You are affected if the Nextcloud iOS app version is below 2.25.0 and you open or preview HTML files within the app.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 2.25.0 or later
Fixed in 2.25.0
Interim mitigation

The vendor should implement proper input sanitization and output encoding for HTML content before rendering. Users should update to a patched version of the app and avoid opening untrusted HTML files from unknown sources.

Fix this in Nextcloud Scoped from the published advisory
  • Consultation2.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
13.0 hours of engineering $2,290
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,664.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-15614 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data