Description
The Featured Image plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image metadata in all versions up to, and including, 2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Affected products
mer.vin: featured image
References8
- github.com/zast-ai/vulnerability-reports/blob/main/wordpress/pl… ExploitThird Party Advisory
- github.com/zast-ai/vulnerability-reports/blob/main/wordpress/pl… ExploitThird Party Advisory
- plugins.trac.wordpress.org/browser/featured-image/tags/2.1/feat… URL Repurposed
- plugins.trac.wordpress.org/browser/featured-image/tags/2.1/feat… URL Repurposed
- plugins.trac.wordpress.org/browser/featured-image/tags/2.1/feat… URL Repurposed
- plugins.trac.wordpress.org/changeset/3392100/
- wordpress.org/plugins/featured-image/ Release Notes
- www.wordfence.com/threat-intel/vulnerabilities/id/fa16605a-12bd… Third Party Advisory
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 1% percentile: 44 · as of 10 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.