Stored Cross-Site Scripting Vulnerability in CYAN Backup Plugin by WordPress
CVE-2024-9663

5.4MEDIUM

Key Information:

Vendor

WordPress
Status
Cyan Backup
Vendor
CVE Published:
15 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2024-9663?

The CYAN Backup plugin for WordPress, prior to version 2.5.3, suffers from a Stored Cross-Site Scripting vulnerability due to improper sanitization and escaping of certain settings. This flaw enables high-privileged users, such as administrators, to inject malicious scripts, even in environments where the unfiltered_html capability is restricted, such as multisite installations. Attackers can exploit this vulnerability to execute their scripts in the context of other users, potentially leading to unauthorized access and further exploitation.

Affected Version(s)

CYAN Backup 0 < 2.5.3

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-2024-9663 - Proof of Concept

References

https://wpscan.com/vulnerability/0dbd0927-f245-4202-b96b-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bob Matyas
WPScan
.