Arbitrary file upload in Wcms

CVE-2023-31689

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.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.202 (97.4th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-31689: held from 0.202 to 0.202.

EPSS over last 30 days · oldest: 0.202 · newest: 0.202 · change: 0.000

Affected products

  • Wcms — versions 0.3.2

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-31689?
CVE-2023-31689 is a critical-severity vulnerability in Wcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-05-22.
How severe is CVE-2023-31689?
Critical severity. CVSS v3 base score is 9.8 out of 10.