🛡️ CVE-2023-31689 — wcms

🔴 CVSS 9.8 — Critical ⚠️ Exploit Public CWE-434 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2023-31689 is classified as CWE-434: Unrestricted Upload of File with Dangerous Type. Uploads are accepted without restricting type, so an executable file can be placed where the server will run it.

Affected software

CVE-2023-31689 is recorded against 1 package.

  • wcms

Timeline and source

Published on 22 May 2023 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

github.com
github.com

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-434
Public Exploit ⚠️ Yes
Source NVD
Published 2023-05-22
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
wcms — —

References

Similar Threats

Exploit Protection

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CVE-2023-31689 carries CVSS 9.8 Critical rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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