User Submitted Posts <= 20241026 - Authenticated (Admin+) Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 20250327
- Affected Version
<= 20241026- CVSS
- 4.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2025-2874
At a glance
CVE-2025-2874 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the User Submitted Posts WordPress plugin, affecting versions <= 20241026. It carries a CVSS score of 4.4 (reachable over the network). Exploitation requires an authenticated account at Admin level or above. The issue is fixed in version 20250327; sites on affected versions should update now. Disclosed April 2025, reported by Quang Bach (maysbachs).
Vulnerability Overview
The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 20240319 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in User Submitted Posts <= 20241026 takes an account at Admin level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For User Submitted Posts the fix is 20250327: builds <= 20241026 are affected, anything from 20250327 onward is not.
Remediation
Update to version 20250327, or a newer patched version
How does WordSec protect against this?
An attacker needs Admin access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: User Submitted Posts 20250327 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in User Submitted Posts – Enable Users to Submit Posts from the Front End
- 9.8CVE-2023-45603: User Submitted Posts <= 20230902 Arbitrary File Upload
CVE-2023-45603 - 9.8CVE-2019-25138: User Submitted Posts <= 20190312 Arbitrary File Upload
CVE-2019-25138 - 6.4CVE-2023-7251: User Submitted Posts <= 20230901 Stored XSS
CVE-2023-7251 - 6.4CVE-2023-4779: User Submitted Posts Stored XSS
CVE-2023-4779 - 5.3CVE-2026-2126: User Submitted Posts Incorrect Authorization
CVE-2026-2126 - 5.3CVE-2025-68509: User Submitted Posts <= 20251121 Open Redirect
CVE-2025-68509 - 4.4CVE-2024-5002: User Submitted Posts Stored XSS
CVE-2024-5002
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