CVE-2025-12448
Stored XSS in Smartsupp WordPress Plugin Allows Script Injection
Publication date: 2026-02-19
Last updated on: 2026-02-19
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| smartsupp | live_chat | to 3.9 (inc) |
| smartsupp | live_chat | 3.2 |
| smartsupp | live_chat | 3.9.2 |
| smartsupp | live_chat | to 3.9.1 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The Smartsupp Live Chat WordPress plugin up to version 3.9.1 is vulnerable to Stored Cross-Site Scripting (XSS) via the 'code' parameter. This vulnerability arises because of insufficient input sanitization and output escaping, allowing authenticated users with Subscriber-level access or higher to inject arbitrary web scripts. These scripts execute whenever a user accesses the injected page, potentially compromising the security of the site.
How can this vulnerability impact me? :
This vulnerability allows attackers with at least Subscriber-level access to inject malicious scripts into the website. These scripts can execute in the context of other users visiting the affected pages, potentially leading to unauthorized actions such as stealing session cookies, defacing the website, redirecting users to malicious sites, or performing actions on behalf of other users without their consent.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection of this vulnerability involves identifying if the Smartsupp Live Chat WordPress plugin version is 3.9.1 or earlier, as these versions are vulnerable to Stored Cross-Site Scripting via the 'code' parameter.
You can check the installed plugin version on your WordPress site by running the following WP-CLI command:
- wp plugin list --status=active | grep smartsupp-live-chat
If the version is 3.9.1 or below, the plugin is vulnerable. Additionally, reviewing logs or monitoring for unusual script injections in pages generated by the plugin may help detect exploitation attempts.
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': 'The primary mitigation step is to update the Smartsupp Live Chat WordPress plugin to version 3.9.2 or later, where the vulnerability has been fixed.'}, {'type': 'paragraph', 'content': "The update includes capability checks for 'unfiltered_html' permissions and nonce verification to prevent unauthorized script injection."}, {'type': 'paragraph', 'content': 'If immediate updating is not possible, restrict Subscriber-level and higher user permissions to trusted users only, as the vulnerability requires authenticated access.'}, {'type': 'paragraph', 'content': "Also, consider monitoring and sanitizing inputs related to the 'code' parameter in the plugin to prevent exploitation."}] [1]