ElementsKit Pro <= 4.10.1 - Unauthenticated Stored Cross-Site Scripting via 's' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-4246
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:40 UTC
Updated2026-08-28 20:17:39 UTC
DescriptionThe ElementsKit Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 's' parameter of the Advanced Search REST endpoint in all versions up to, and including, 4.10.1 due to insufficient input sanitization and output escaping. The REST endpoint at /wp-json/elementskit/v1/advanced-search uses permission_callback set to __return_true, allowing unauthenticated access. Search terms are stored in the ekit_advanced_search_popular_keyword WordPress option via update_option(). While sanitize_text_field() is applied, it does not encode double quotes, and the stored keywords are rendered in HTML attributes via sprintf without esc_attr(), allowing attribute injection. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user triggers the "no results" popular keywords view on pages using the Advanced Search widget.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

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

EPSS: 0.002740000 probability, percentile 0.193290000 (date 2026-08-31)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpmet ElementsKit Pro affected 4.10.1 semver Not specified

References

ReferenceSourceLinkTags
wpmet.com/plugin/elementskit/roadmaps [email protected] wpmet.com
www.wordfence.com/threat-intel/vulnerabilities/id/a40e7a88-11f2-4fa8-856b-bda3e... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/elementskit/trunk/widgets/advanced-search/advanced-se... [email protected] plugins.trac.wordpress.org
wpmet.com/plugin/elementskit [email protected] wpmet.com
plugins.trac.wordpress.org/browser/elementskit/trunk/widgets/advanced-search/advanced-se... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/elementskit/trunk/widgets/advanced-search/advanced-se... [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: Ren Voza (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-16T17:15:52.000ZVendor Notified
CNA2026-08-27T00:00:00.000ZDisclosed

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