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CVE-2023-45603

28
FAUCET Score

CVE-2023-45603 describes an Unrestricted Upload of File with Dangerous Type vulnerability affecting the Jeff Starr User Submitted Posts WordPress plugin, specifically versions up to and including 20230902. This critical vulnerability, rated 9.8 CVSS, allows unauthenticated attackers to upload malicious files, leading to complete compromise of confidentiality, integrity, and availability of the affected system. While there is no known active exploitation or publicly available exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community. Its high severity and ease of exploitation (network attack, low complexity, no user interaction) make it a significant risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 20230902CPE matchmatch criteria
cpe:2.3:a:plugin-planet:user_submitted_posts:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
56.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 41st percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

patchstack.com / database/vulnerability/user-submitted-posts/wordpress-user-submitted-posts-plugin-20230902-unauthenticated-arbitrary-file-upload-vulnerability
Third Party Advisory