Click to Chat <= 4.22 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via data-no_number Parameter

2025-06-13 20:15

Asaf Mozes

Strategic Overview

Status

Patched in 4.23

Affected PluginClick to Chat – HoliThemes

Affected Version<= 4.22

CVSS6.4Medium

CVECVE-2025-5336

View all Click to Chat – HoliThemes vulnerabilities

Vulnerability Overview

The Click to Chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-no_number’ parameter in all versions up to, and including, 4.22 to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 4.23, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2025-5336 https://www.wordfence.com/threat-intel/vulnerabilities/id/83695ac4-a08b-4c25-ac33-d9b7498f5a2c

CVSS Vector

6.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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