CVE-2021-4436
CVSS v3
9.8
CRITICAL
EPSS Score
6.6 %
exploit probability, as of 2026-10-04
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The 3DPrint Lite WordPress plugin before 1.9.1.5 does not have any authorisation and does not check the uploaded file in its p3dlite_handle_upload AJAX action , allowing unauthenticated users to upload arbitrary file to the web server. However, there is a .htaccess, preventing the file to be accessed on Web servers such as Apache.
Technical details
- Published
- 2024-02-05
Frequently asked questions
What is CVE-2021-4436?
The 3DPrint Lite WordPress plugin before 1.9.1.5 does not have any authorisation and does not check the uploaded file in its p3dlite_handle_upload AJAX action , allowing unauthenticated users to upload arbitrary file to the web server. However, there is a .htaccess, preventing the file to be accessed on Web servers such as Apache.
Is CVE-2021-4436 actively exploited?
Active exploitation of CVE-2021-4436 has not been confirmed. Its EPSS score was 6.6% on 2026-10-04, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-4436?
CVE-2021-4436 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-4436 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 50 free checks/month · Free API key
Other 2021 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).