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CVE-2023-4308

20
FAUCET Score

CVE-2023-4308 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the User Submitted Posts plugin for WordPress, specifically versions up to and including 20230809. This flaw stems from insufficient input sanitization and output escaping of the 'user-submitted-content' parameter, allowing unauthenticated attackers to inject malicious web scripts. Rated as MEDIUM severity with a CVSS score of 5.4, the vulnerability requires low privileges and user interaction, potentially leading to limited impact on confidentiality and integrity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 20230811CPE matchmatch criteria
cpe:2.3:a:plugin-planet:user_submitted_posts:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 43rd percentile among its peer group of 15,222 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / changeset/2952471/user-submitted-posts
Patch
wordfence.com / threat-intel/vulnerabilities/id/3bb4d37c-c4c2-4523-9b4e-73ffb7be81ea
Third Party Advisory