CVE-2026-4246 json
ElementsKit Pro <= 4.10.1 - Unauthenticated Stored Cross-Site Scripting via 's' Parameter
published 2026-08-28 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-67564
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
The 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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- wpmet ElementsKit Pro
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/a40e7a88-11f2-4fa8-856b-bda3ebcbae56?source=cve
- wpmet.com /plugin/elementskit/
- plugins.trac.wordpress.org /browser/elementskit/trunk/widgets/advanced-search/advanced-search-result.php#L174
- plugins.trac.wordpress.org /browser/elementskit/trunk/widgets/advanced-search/advanced-search-handler.php#L38
- plugins.trac.wordpress.org /browser/elementskit/trunk/widgets/advanced-search/advanced-search-result.php#L91
- wpmet.com /plugin/elementskit/roadmaps/
Sources
- CVE List CVE-2026-4246
- NVD CVE-2026-4246
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.