PT-2026-31255 · WordPress · Fesomia Fsm Custom Featured Image Caption

Published 2026-04-08 · Updated 2026-04-12 · CVE-2026-39693

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions fesomia FSM Custom Featured Image Caption versions through 1.25.1

Description A DOM-Based Cross-Site Scripting (XSS) issue exists in the fesomia FSM Custom Featured Image Caption plugin. This allows for improper neutralization of input during web page generation.

Recommendations Update to a version newer than 1.25.1

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-39693

Affected Products

Fesomia Fsm Custom Featured Image Caption

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-39693 · Security Note
• https://twitter.com/CVEnew/status/2043295705230409937 · Twitter Post
• https://t.me/CVEtracker/50014 · Telegram Post
• https://patchstack.com/database/Wordpress/Plugin/fsm-custom-featured-image-caption/vulnerability/wordpress-fsm-custom-featured-image-caption-plugin-1-25-1-cross-site-scripting-xss-vulnerability?_s_id=cve · Note