User Submitted Posts <= 20260916 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'user-submitted-content' Parameter via Block-Comment Shortcode Splitting

User Submitted Posts – Enable Users to Submit Posts from the Front End · Cross-site scripting · CWE-79

AffectedUser Submitted Posts – Enable Users to Submit Posts from the Front End

FixNo fix listed yet.

PublishedOct 31, 06:44 · Wordfence

ScoredOct 31 · 7.2 · Wordfence

Exploit code publicNone known · checked 00:19 UTC

ExploitedNone known · CISA KEV checked 01:03 UTC

What we know

No known exploitation. CISA KEV, checked 01:03 UTC.

No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 00:19 UTC.

An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.

Description

The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'user-submitted-content' parameter in all versions up to, and including, 20260916 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. On a default installation the submitted post is held as Pending and requires admin approval before the payload is reachable by other visitors; however, if the plugin's "publish immediately" option is enabled, no approval step exists and the stored payload becomes live without any moderator interaction.

From Wordfence

Affected and fixed versions

ProductAffectedFixed inUser Submitted Posts – Enable Users to Submit Posts from the Front Endup to 20260916–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References