CVE-2021-4436: 3DPrint Lite < 1.9.1.5 - Unauthenticated Arbitrary File Upload

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-02-05 · updated 2026-06-17
Weakness: CWE-434

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.

Affected products

fuzzoid 3DPrint Lite: before 1.9.1.5 — fixed in 1.9.1.5

How to fix

Upgrade to a fixed version: fuzzoid 3DPrint Lite 1.9.1.5. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/
https://wpscan.com/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/

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