Vulnerability · Published Apr 8, 2026 · Assigned by Patchstack
CVE-2026-39693WordPress FSM Custom Featured Image Caption plugin <= 1.25.1 - Cross Site Scripting (XSS) vulnerability
Medium 5.9
In plain English
A medium-severity cross-site scripting in FSM Custom Featured Image Caption from fesomia. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.1%top 96.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| fesomia | FSM Custom Featured Image Caption | 0 – through 1.25.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L