// For flags

CVE-2023-2023

Custom 404 Pro < 3.7.3 - Reflected Cross-Site Scripting

Severity Score

6.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.

The Custom 404 Pro plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘s’ parameter in versions up to, and including, 3.7.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

*Credits: Chien Vuong, WPScan
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-04-13 CVE Reserved
  • 2023-05-02 CVE Published
  • 2024-02-15 First Exploit
  • 2024-12-20 EPSS Updated
  • 2025-01-09 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Kunalnagar
Search vendor "Kunalnagar"
 Custom 404 Pro
Search vendor "Kunalnagar" for product "Custom 404 Pro"
 < 3.7.3
Search vendor "Kunalnagar" for product "Custom 404 Pro" and version " < 3.7.3"
wordpress
Affected