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fsm-custom-featured-image-caption: Malicious Code Can Be Injected in Captions
CVE-2026-39693
Summary
The fsm-custom-featured-image-caption plugin for WordPress allows an attacker to inject malicious code into image captions, potentially allowing them to take control of a website. This issue affects all versions of the plugin up to 1.25.1. To protect your site, update to a fixed version of the plugin as soon as possible.
Original title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fesomia FSM Custom Featured Image Caption fsm-custom-featured-image-caption allows DOM-Based XS...
Original description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fesomia FSM Custom Featured Image Caption fsm-custom-featured-image-caption allows DOM-Based XSS.This issue affects FSM Custom Featured Image Caption: from n/a through <= 1.25.1.
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
Published: 8 Apr 2026 · Updated: 9 Apr 2026 · First seen: 8 Apr 2026