CVE-2023-45603
CWE-434Published: December 20, 2023· Updated: Jun 17, 2026
Official Description
Unrestricted Upload of File with Dangerous Type vulnerability in Jeff Starr User Submitted Posts – Enable Users to Submit Posts from the Front End.This issue affects User Submitted Posts – Enable Users to Submit Posts from the Front End: from n/a through 20230902.
Risk Analysis
This vulnerability allows for the unrestricted upload of dangerous file types in the User Submitted Posts plugin. With a CVSS score of 9.8, it is considered critical as it enables remote attackers to execute arbitrary code without authentication.
There is no known public exploit for this vulnerability, and it is not currently listed in CISA's KEV catalog.
Users should ensure they are running the latest version of the User Submitted Posts plugin to address this security flaw.
Technical Analysis
CVE-2023-45603 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-434)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-45603 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts