TI-2023-03982 Aliases CVE-2023-4308 GHSA-cxw2-5qm7-6j42

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

LOW 38CWE-79Published 2023-08-15 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0042 36th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
specialk	User Submitted Posts – Enable Users to Submit Posts from the Front End	up to 20230809	—	No fix listed	CNA

User Submitted Posts – Enable Users to Submit Posts from the Front End Vendorspecialk Affected up to 20230809 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:plugin-planet:user_submitted_posts::::::wordpress::*	before 20230811	Vulnerable	specialk

cpe:2.3:a:plugin-planet:user_submitted_posts:*:*:*:*:*:wordpress:*:* Versions before 20230811 Vulnerable ·specialk

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-4308
2026-10-03 Alias added: GHSA-cxw2-5qm7-6j42

References

Patch 1

https://plugins.trac.wordpress.org/changeset/2952471/user-submitted-posts

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/3bb4d37c-c4c2-4523-9b4e-73ffb7be81ea?source=cve

TI-2024-04645 User Submitted Posts < 20240516 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
TI-2019-15241 User Submitted Posts <= 20190312 - Unauthenticated Arbitrary File Upload CVSS 3.1CRITICAL 9.8
TI-2023-24406 WordPress User Submitted Posts Plugin <= 20230902 is vulnerable to Arbitrary File Upload CVSS 3.1CRITICAL 9.8
TI-2016-09039 The user-submitted-posts plugin before 20160215 for WordPress has XSS via the user-submitted-content field. CVSS 3.1MEDIUM 6.1
TI-2023-04406 Cross-site scripting in specialk User Submitted Posts – Enable Users to Submit Posts from… CVSS 3.1MEDIUM 6.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences