Arbitrary file upload in Mathieu Chartier Wp-Advanced-Search

CVE-2025-39538

Unrestricted Upload of File with Dangerous Type vulnerability in Mathieu Chartier WP-Advanced-Search wp-advanced-search allows Upload a Web Shell to a Web Server.This issue affects WP-Advanced-Search: from n/a through <= 3.3.9.4.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (40.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.0% 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-2025-39538: held from 0.005 to 0.005.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-39538?
CVE-2025-39538 is a medium-severity vulnerability in Mathieu Chartier Wp-Advanced-Search, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.6/10. Published 2025-04-16.
How severe is CVE-2025-39538?
Medium severity. CVSS v3 base score is 6.6 out of 10.
Is CVE-2025-39538 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.