Info Cards <= 2.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Block Attributes
Summary
| CVE | CVE-2026-4120 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-19 07:16:00 UTC |
| Updated | 2026-04-22 21:32:08 UTC |
| Description | The Info Cards – Add Text and Media in Card Layouts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btnUrl' parameter within the Info Cards block in all versions up to, and including, 2.0.7. This is due to insufficient input validation on URL schemes, specifically the lack of javascript: protocol filtering. The block's render.php passes all attributes as JSON to the frontend via a data-attributes HTML attribute using esc_attr(wp_json_encode()), which prevents HTML attribute injection but does not validate URL protocols within the JSON data. The client-side view.js then renders the btnUrl value directly as an href attribute on anchor elements without any protocol sanitization. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject javascript: URLs that execute arbitrary web scripts when a user clicks the rendered button link. |
Risk And Classification
Primary CVSS: v3.1 6.4 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS: 0.000540000 probability, percentile 0.169390000 (date 2026-04-22)
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 6.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 6.4 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Bplugins | Info Cards Add Text And Media In Card Layouts | affected 2.0.7 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/info-cards/trunk/build/block.json | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/info-cards/trunk/build/view.js | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/info-cards/trunk/build/render.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/info-cards/tags/2.0.7/build/view.js | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/279984d9-f352-467f-a53d-81446... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/info-cards/tags/2.0.7/build/block.json | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/info-cards/tags/2.0.7/build/render.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/info-cards/trunk/build/render.php | [email protected] | plugins.trac.wordpress.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Itthidej Aramsri (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-03-13T13:45:40.000Z | Vendor Notified |
| CNA | 2026-03-18T00:00:00.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.