CVE-2021-4436 json
3DPrint Lite < 1.9.1.5 - Unauthenticated Arbitrary File Upload
published 2y ago modified 4mo ago also EUVD-2021-34262
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 6.6%
- EPSS 6.6% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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.
Patch / fix
- Unknown 3DPrint Lite 1.9.1.5
- wp3dprinting 3dprint_lite 1.9.1.5
Is CVE-2021-4436 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2y ago
Exploit prediction
6.65% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Nuclei template 3DPrint Lite < 1.9.1.5 - Arbitrary File Upload nuclei detection template
- wpscan.com https://wpscan.com/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Unknown 3DPrint Lite
- wp3dprinting 3dprint_lite
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
-
wpscan.com
/vulnerability/c46ecd0d-a132-4ad6-b936-8acde3a09282/
exploit, vdb-entry, technical-description, third-party-advisory
Sources
- CVE List CVE-2021-4436
- NVD CVE-2021-4436
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.