CVE-2021-47977

HIGH

WordPress Anti-Malware Security Bruteforce Firewall 4.20.59 Directory Traversal

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47977. PoCs published by TheSmuggler.

AI-analyzed exploit summary This exploit demonstrates a directory traversal vulnerability in the WordPress Plugin Anti-Malware Security and Bruteforce Firewall. It sends a crafted HTTP request to download arbitrary files from the server, such as 'win.ini', by manipulating the 'file' parameter in the 'duplicator_download' action.

Description

WordPress Plugin Anti-Malware Security and Bruteforce Firewall 4.20.59 contains a directory traversal vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating the file parameter. Attackers can send requests to the duplicator_download action via admin-ajax.php with path traversal sequences to access sensitive system files outside the intended directory.

Exploits (1)

exploitdb WORKING POC
by TheSmuggler · pythonwebappsphp
https://www.exploit-db.com/exploits/50107

This exploit demonstrates a directory traversal vulnerability in the WordPress Plugin Anti-Malware Security and Bruteforce Firewall. It sends a crafted HTTP request to download arbitrary files from the server, such as 'win.ini', by manipulating the 'file' parameter in the 'duplicator_download' action.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: WordPress Plugin Anti-Malware Security and Bruteforce Firewall <= 4.20.72
No auth needed
Prerequisites: WordPress installation with vulnerable plugin · Network access to the target
devstral-2 · analyzed May 16, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit exploit
ExploitDB-50107
https://www.exploit-db.com/exploits/50107
Product product
Official Product Homepage
https://gotmls.net/
Product product
Product Reference
https://gotmls.net/downloads/
Third Party Advisory third-party-advisory
VulnCheck Advisory: WordPress Anti-Malware Security Bruteforce Firewall 4.20.59 Directory Traversal
https://www.vulncheck.com/advisories/wordpress-anti-malware-security-bruteforce-firewall-directory-traversal

Scores

CVSS v3 7.5
EPSS 0.0065
EPSS Percentile 46.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (1)
Gotmls/Malware Security and Bruteforce Firewall < 4.20.72
Published May 16, 2026
Tracked Since May 16, 2026