Contact List <= 3.0.18 - Authenticated (Contributor+) Stored Cross-Site Scripting via '_cl_map_iframe' Parameter
Summary
| CVE | CVE-2026-3516 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-21 00:16:28 UTC |
| Updated | 2026-04-22 21:32:08 UTC |
| Description | The Contact List plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '_cl_map_iframe' parameter in all versions up to, and including, 3.0.18. This is due to insufficient input sanitization and output escaping when handling the Google Maps iframe custom field. The saveCustomFields() function in class-contact-list-custom-fields.php uses a regex to extract <iframe> tags from user input but does not validate or sanitize the iframe's attributes, allowing event handlers like 'onload' to be included. The extracted iframe HTML is stored via update_post_meta() and later rendered on the front-end in class-cl-public-card.php without any escaping or wp_kses filtering. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. |
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: 0.000210000 probability, percentile 0.056550000 (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 | Anssilaitila | Contact List Online Staff Directory Address Book | affected 3.0.18 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/contact-list/tags/3.0.17/includes/class-contact-list-... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/contact-list/trunk/includes/class-contact-list-custom... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/changeset/3486445 | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/contact-list/trunk/public/class-cl-public-card.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/contact-list/tags/3.0.17/public/class-cl-public-card.php | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/a8059995-55cb-49ee-add1-f5364... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/contact-list/tags/3.0.17/includes/class-contact-list-... | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/contact-list/trunk/includes/class-contact-list-custom... | [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: Tharadol Suksamran (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-03-10T19:29:26.000Z | Vendor Notified |
| CNA | 2026-03-20T10:58:51.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.