CVE-2023-4308

HIGH 7.2

User Submitted Posts <= 20230809 - Unauthenticated Stored Cross-Site Scripting via 'user-submitted-content'

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘user-submitted-content’ parameter in versions up to, and including, 20230809 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.

CWE	CWE-79
Vendor	specialk
Product	user submitted posts – enable users to submit posts from the front end
Published	Aug 15, 2023
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

specialk / User Submitted Posts – Enable Users to Submit Posts from the Front End

0 ≤ 20230809

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/3bb4d37c-c4c2-4523-9b4e-73ffb7be81ea?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/2952471/user-submitted-posts

Credits

Ngô Thiên An Phan Trong Quan