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Fencer Intel
critical 9.8

CVE-2020-36847 in the critical feed json

Simple File List < 4.2.3 - Remote Code Execution

published last yr. modified 4mo ago also EUVD-2020-30797

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
43.5%
EPSS 43.5% chance of exploitation in 30 days, percentile 98%
public exploits
2
Metasploit and Exploit-DB

Summary

The Simple-File-List Plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 4.2.2 via the rename function which can be used to rename uploaded PHP code with a png extension to use a php extension. This allows unauthenticated attackers to execute code on the server.

Patch / fix

  • eemitch Simple File List 4.2.3

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Timeline

  1. First public exploit (Metasploit exploit/multi/http/wp_simple_file_list_rce)
  2. Published

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
last yr.

Exploit prediction

43.52% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/multi/http/wp_simple_file_list_rce WordPress Simple File List Unauthenticated Remote Code Execution metasploit exploit, good rank, 2020-04-27
  • EDB-52371 Simple File List WordPress Plugin 4.2.2 - File Upload to RCE webapps, 2025-07-22
  • wpscan.com https://wpscan.com/vulnerability/365da9c5-a8d0-45f6-863c-1b1926ffd574/ referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/160221/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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

  • eemitch Simple File List

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type
Technology feeds

References

Sources

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.