CVE-2026-0800
Stored XSS in WordPress User Submitted Posts Plugin Allows Script Injection
Publication date: 2026-01-24
Last updated on: 2026-01-24
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| unknown_vendor | user_submitted_posts | to 20251210 (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?
This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the User Submitted Posts plugin for WordPress. It occurs because the plugin does not properly sanitize and escape user input in custom fields, allowing unauthenticated attackers to inject malicious scripts. These scripts are then stored and executed whenever any user accesses the affected page, potentially compromising user security. [1]
How can this vulnerability impact me? :
The vulnerability can allow attackers to execute arbitrary web scripts in the context of the affected website. This can lead to theft of user credentials, session hijacking, defacement, or distribution of malware to visitors. Since the attack is stored, it can affect all users who view the injected content, increasing the risk and impact. [1]
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, immediately update the User Submitted Posts WordPress plugin to version 20260110 or later. This update improves input sanitization by applying the wp_kses_post() function to user-supplied inputs, preventing stored cross-site scripting attacks. Additionally, ensure your WordPress installation is version 6.9 or higher and PHP version is 5.6.20 or higher to maintain compatibility and security. [1]