Wiz
Vulnerability DatabaseCVE-2023-6561

CVE-2023-6561: 
WordPress vulnerability analysis and mitigation

Overview

The Featured Image from URL (FIFU) WordPress plugin contains a Stored Cross-Site Scripting vulnerability (CVE-2023-6561) in versions up to and including 4.5.3. The vulnerability was discovered in the featured image alt text functionality due to insufficient input sanitization and output escaping (NVD).

Technical details

The vulnerability stems from improper sanitization and escaping of the featured image alt text in the plugin. It has been assigned a CVSS v3.1 base score of 5.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. The vulnerability is classified as CWE-79: Improper Neutralization of Input During Web Page Generation (NVD, WPScan).

Impact

When exploited, this vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses the compromised page (NVD).

Mitigation and workarounds

The vulnerability has been patched in version 4.5.4 of the Featured Image from URL (FIFU) plugin. Site administrators should update to this version or later to protect against this vulnerability (WPScan).

Additional resources

Source: This report was generated using AI

Related WordPress vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-0726HIGH8.1
  • nexter-extension
NoYesJan 20, 2026
CVE-2026-0690MEDIUM6.4
  • flatpm-wp
NoYesJan 20, 2026
CVE-2026-0608MEDIUM6.4
  • head-meta-data
NoYesJan 20, 2026
CVE-2026-0548MEDIUM5.4
  • tutor
NoYesJan 20, 2026
CVE-2026-0554MEDIUM4.3
  • notificationx
NoYesJan 20, 2026

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo