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Cross-site Scripting (XSS)Weakness · CWE-79

CVE-2026-5428

MEDIUM · 6.4 CVSS v3.1 Published 2026-04-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
70/100
Remediation priority · Elevated
Remotely reachable Zero-click

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
The Royal Elementor Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image captions in the Image Grid/Slider/Carousel widget in versions up to and including 1.7.1056. This is due to insufficient output escaping in the render_post_thumbnail() function, where wp_kses_post() is used instead of esc_attr() for the alt attribute context. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page with the malicious image displayed in the media grid widget.

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 · high confidence

The Royal Elementor Addons plugin for WordPress is vulnerable to stored XSS in the Image Grid/Slider/Carousel widget. The render_post_thumbnail() function uses wp_kses_post() for escaping the image alt attribute instead of esc_attr(), allowing authenticated Author+ users to inject malicious scripts via image captions that execute when users view affected pages.

MitigationUpdate Royal Elementor Addons to a version newer than 1.7.1056. Until updated, review and sanitize any image captions added by users with Author-level permissions.

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

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
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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. Verify Royal Elementor Addons is installed
    In WordPress admin, go to Plugins > Installed Plugins and locate Royal Elementor Addons. Note the installed version number.
    Affected if Plugin is installed and version is 1.7.1056 or lower
  2. Confirm Image Grid/Slider/Carousel widget is in use
    Navigate to Pages or Posts in the admin panel. Edit any page containing an Elementor section with an Image Grid, Slider, or Carousel widget. Inspect the widget settings to confirm the widget type.
    Affected if These specific widget types are present on any published page or post
  3. Check for custom image captions
    Go to Media > Library. Click on any images used in the affected widgets. Review the Caption field in the attachment details. Look for unexpected HTML or script tags.
    Affected if Images have captions containing unescaped HTML or JavaScript code, particularly if authored by users with Author permissions or lower
  4. Review Author-level user contributions
    Go to Users > All Users. Identify any users with Author role. Check Posts > All Posts and Media > Library for content created by these users, focusing on images with captions.
    Affected if Author-level users have uploaded images with custom captions in the media library
  5. Inspect rendered page output
    View a page containing the Image Grid/Slider/Carousel widget on the frontend. Right-click > View Page Source and search for image alt attributes. Verify the caption text is properly escaped (no raw HTML visible in alt="...").
    Affected if Raw HTML or unescaped characters appear within alt attributes in the rendered HTML

A user is affected if Royal Elementor Addons version 1.7.1056 or lower is installed AND Image Grid/Slider/Carousel widgets with custom image captions are in use on the site.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Royal Elementor Addons to a version newer than 1.7.1056. Until updated, review and sanitize any image captions added by users with Author-level permissions.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,190
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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-2026-5428 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
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