Stored Cross-Site Scripting in Full Screen Background Image Slideshow Plugin for WordPress
CVE-2024-11221

4.8MEDIUM

Key Information:

Vendor

WordPress
Status
Full Screen (page) Background Image Slideshow
Vendor
CVE Published:
15 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2024-11221?

The Full Screen (Page) Background Image Slideshow plugin for WordPress, versions up to 1.1, is susceptible to Stored Cross-Site Scripting (XSS) vulnerabilities due to insufficient sanitization and escaping of certain settings. This flaw allows high privilege users, including admin-level accounts, to execute XSS attacks even if the unfiltered_html capability is disabled, particularly in multisite setups. Consequently, malicious scripts can be injected and executed in the context of the affected site, potentially compromising user data and site integrity.

Affected Version(s)

Full Screen (Page) Background Image Slideshow 0 <= 1.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2024-11221 - Proof of Concept

References

https://wpscan.com/vulnerability/810c2c94-5d35-419c-a993-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bob Matyas
WPScan
.