CVE-2023-31689
CWE-434Published: May 22, 2023· Updated: Jun 17, 2026
Official Description
In Wcms 0.3.2, an attacker can send a crafted request from a vulnerable web application backend server /wcms/wex/html.php via the finish parameter and the textAreaCode parameter. It can write arbitrary strings into custom file names and upload any files, and write malicious code to execute scripts to trigger command execution.
Risk Analysis
Wcms 0.3.2 is vulnerable to arbitrary file uploads and command execution via crafted requests to the backend. This critical 9.8 CVSS flaw allows remote attackers to execute malicious scripts on the server.
No public exploit is currently known, and the vulnerability is not in the KEV catalog. It is remotely exploitable.
Upgrade to a secure version of Wcms or apply patches to prevent unauthorized file uploads and script execution.
Technical Analysis
CVE-2023-31689 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
All References (2)
Quick Facts
Related CVEs (CWE-434)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-31689 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts