CVE-2026-0800
Unknown Unknown - Not Provided

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
The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the custom fields in all versions up to, and including, 20251210 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-01-24
Last Modified
2026-01-24
Generated
2026-07-06
AI Q&A
2026-01-24
EPSS Evaluated
2026-07-05
NVD
CVE-2026-0800

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
unknown_vendor user_submitted_posts to 20251210 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

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]

Impact Analysis

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]

Mitigation Strategies

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]

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